<?xml version="1.0" encoding="us-ascii"?>
<!--XBRL document created with Crossfire XBRL Enabler by Rivet Software version 3.6.4037.19442-->
<!--Based on XBRL 2.1-->
<!--Created on: 2/16/2011 2:13:37 PM-->
<!--Modified on: 2/16/2011 2:13:37 PM-->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#StatementConsolidatedStatementsOfIncome" roleURI="http://www.nscorp.com/role/StatementConsolidatedStatementsOfIncome" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#StatementConsolidatedBalanceSheets" roleURI="http://www.nscorp.com/role/StatementConsolidatedBalanceSheets" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#StatementConsolidatedBalanceSheetsParenthetical" roleURI="http://www.nscorp.com/role/StatementConsolidatedBalanceSheetsParenthetical" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#StatementConsolidatedStatementsOfCashFlows" roleURI="http://www.nscorp.com/role/StatementConsolidatedStatementsOfCashFlows" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureOtherIncomeNet" roleURI="http://www.nscorp.com/role/DisclosureOtherIncomeNet" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureIncomeTaxes" roleURI="http://www.nscorp.com/role/DisclosureIncomeTaxes" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureFairValue" roleURI="http://www.nscorp.com/role/DisclosureFairValue" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureInvestments" roleURI="http://www.nscorp.com/role/DisclosureInvestments" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureLeaseCommitments" roleURI="http://www.nscorp.com/role/DisclosureLeaseCommitments" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureOtherLiabilities" roleURI="http://www.nscorp.com/role/DisclosureOtherLiabilities" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosurePensionsAndOtherPostretirementBenefits" roleURI="http://www.nscorp.com/role/DisclosurePensionsAndOtherPostretirementBenefits" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureStockBasedCompensation" roleURI="http://www.nscorp.com/role/DisclosureStockBasedCompensation" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureStockRepurchaseProgram" roleURI="http://www.nscorp.com/role/DisclosureStockRepurchaseProgram" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureEarningsPerShare" roleURI="http://www.nscorp.com/role/DisclosureEarningsPerShare" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureCommitmentsAndContingencies" roleURI="http://www.nscorp.com/role/DisclosureCommitmentsAndContingencies" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureFairValueTables" roleURI="http://www.nscorp.com/role/DisclosureFairValueTables" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureInvestmentsTables" roleURI="http://www.nscorp.com/role/DisclosureInvestmentsTables" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureEarningsPerShareTables" roleURI="http://www.nscorp.com/role/DisclosureEarningsPerShareTables" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureOtherIncomeNetDetails" roleURI="http://www.nscorp.com/role/DisclosureOtherIncomeNetDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureIncomeTaxesDetails" roleURI="http://www.nscorp.com/role/DisclosureIncomeTaxesDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureFairValueDetails" roleURI="http://www.nscorp.com/role/DisclosureFairValueDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureInvestmentsParentheticalDetails" roleURI="http://www.nscorp.com/role/DisclosureInvestmentsParentheticalDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosurePropertiesDetails" roleURI="http://www.nscorp.com/role/DisclosurePropertiesDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureCurrentLiabilitiesDetails" roleURI="http://www.nscorp.com/role/DisclosureCurrentLiabilitiesDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureDebtNarrativeDetails" roleURI="http://www.nscorp.com/role/DisclosureDebtNarrativeDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureDebtTablesDetails" roleURI="http://www.nscorp.com/role/DisclosureDebtTablesDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureLeaseCommitmentsDetails" roleURI="http://www.nscorp.com/role/DisclosureLeaseCommitmentsDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureOtherLiabilitiesDetails" roleURI="http://www.nscorp.com/role/DisclosureOtherLiabilitiesDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosurePensionsAndOtherPostretirementBenefitsNarrativeDetails" roleURI="http://www.nscorp.com/role/DisclosurePensionsAndOtherPostretirementBenefitsNarrativeDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosurePensionsAndOtherPostretirementBenefitsPensionAndOtherPostretirementBenefitCostComponentsDetails" roleURI="http://www.nscorp.com/role/DisclosurePensionsAndOtherPostretirementBenefitsPensionAndOtherPostretirementBenefitCostComponentsDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosurePensionsAndOtherPostretirementBenefitsPensionPlanWeightedAverageAssetAllocationsByAssetCategoryDetails" roleURI="http://www.nscorp.com/role/DisclosurePensionsAndOtherPostretirementBenefitsPensionPlanWeightedAverageAssetAllocationsByAssetCategoryDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureStockholdersEquityDetails" roleURI="http://www.nscorp.com/role/DisclosureStockholdersEquityDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureStockRepurchaseProgramDetails" roleURI="http://www.nscorp.com/role/DisclosureStockRepurchaseProgramDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureEarningsPerShareDetails" roleURI="http://www.nscorp.com/role/DisclosureEarningsPerShareDetails" />
  <roleRef xlink:type="simple" xlink:href="nsc-20101231.xsd#DisclosureCommitmentsAndContingenciesDetails" roleURI="http://www.nscorp.com/role/DisclosureCommitmentsAndContingenciesDetails" />
  <calculationLink xlink:role="http://www.nscorp.com/role/StatementConsolidatedStatementsOfIncome" xlink:type="extended" xlink:title="00100 - Statement - Consolidated Statements of Income">
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_ProfitLoss" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_IncomeBeforeIncomeTaxes" xlink:label="nsc_IncomeBeforeIncomeTaxes" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ProfitLoss" xlink:to="nsc_IncomeBeforeIncomeTaxes" order="1" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss_634280156960923717" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="nsc_IncomeBeforeIncomeTaxes" xlink:to="us-gaap_OperatingIncomeLoss_634280156960923717" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_634280156960923717" xlink:to="us-gaap_Revenues" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="us-gaap_OperatingExpenses" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_634280156960923717" xlink:to="us-gaap_OperatingExpenses" order="2" use="optional" weight="-1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CostOfServicesDepreciation" xlink:label="us-gaap_CostOfServicesDepreciation_634280155093747748" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_CostOfServicesDepreciation_634280155093747748" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_FuelCosts" xlink:label="us-gaap_FuelCosts_634280155093747748" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_FuelCosts_634280155093747748" order="2" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_MaterialsAndOther" xlink:label="nsc_MaterialsAndOther_634280155093747748" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingExpenses" xlink:to="nsc_MaterialsAndOther_634280155093747748" order="3" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="us-gaap_LaborAndRelatedExpense_634280155597942980" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_LaborAndRelatedExpense_634280155597942980" order="4" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_PurchasedServicesAndRents" xlink:label="nsc_PurchasedServicesAndRents_634280155597942980" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingExpenses" xlink:to="nsc_PurchasedServicesAndRents_634280155597942980" order="5" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense_634280156960923717" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="nsc_IncomeBeforeIncomeTaxes" xlink:to="us-gaap_InterestExpense_634280156960923717" order="2" use="optional" weight="-1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_634280156960923717" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="nsc_IncomeBeforeIncomeTaxes" xlink:to="us-gaap_OtherNonoperatingIncomeExpense_634280156960923717" order="3" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit_634280157729384643" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ProfitLoss" xlink:to="us-gaap_IncomeTaxExpenseBenefit_634280157729384643" order="2" use="optional" weight="-1" priority="2" />
  </calculationLink>
  <calculationLink xlink:role="http://www.nscorp.com/role/StatementConsolidatedBalanceSheets" xlink:type="extended" xlink:title="00200 - Statement - Consolidated Balance Sheets">
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets_633846466417748417" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_AssetsCurrent" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets_633846466417748417" xlink:to="loc_AssetsCurrent" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashEquivalentsAtCarryingValue_633846492463219791" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AssetsCurrent" xlink:to="us-gaap_CashEquivalentsAtCarryingValue_633846492463219791" order="1" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShortTermInvestments" xlink:label="us-gaap_ShortTermInvestments_634000276934405916" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AssetsCurrent" xlink:to="us-gaap_ShortTermInvestments_634000276934405916" order="2" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="us-gaap_AccountsReceivableNetCurrent_633911329359709121" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AssetsCurrent" xlink:to="us-gaap_AccountsReceivableNetCurrent_633911329359709121" order="3" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_MaterialsAndSupplies" xlink:label="nsc_MaterialsAndSupplies_633911329508448649" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AssetsCurrent" xlink:to="nsc_MaterialsAndSupplies_633911329508448649" order="4" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsNetCurrent" xlink:label="loc_DeferredTaxAssetsNetCurrent" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AssetsCurrent" xlink:to="loc_DeferredTaxAssetsNetCurrent" order="5" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_OtherAssetsCurrent" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_AssetsCurrent" xlink:to="loc_OtherAssetsCurrent" order="6" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_633911329673280794" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets_633846466417748417" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_633911329673280794" order="2" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LongTermInvestments" xlink:label="us-gaap_LongTermInvestments_633911329794366019" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets_633846466417748417" xlink:to="us-gaap_LongTermInvestments_633911329794366019" order="3" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="us-gaap_OtherAssetsNoncurrent_633911329902639646" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets_633846466417748417" xlink:to="us-gaap_OtherAssetsNoncurrent_633911329902639646" order="4" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_633846466418685917" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_Liabilities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity_633846466418685917" xlink:to="loc_Liabilities" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_LiabilitiesCurrent" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Liabilities" xlink:to="loc_LiabilitiesCurrent" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent_633911330171526965" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LiabilitiesCurrent" xlink:to="us-gaap_AccountsPayableCurrent_633911330171526965" order="1" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="us-gaap_ShortTermBorrowings_634000278307033910" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LiabilitiesCurrent" xlink:to="us-gaap_ShortTermBorrowings_634000278307033910" order="2" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_TaxesPayableCurrent" xlink:label="us-gaap_TaxesPayableCurrent_633911330301986530" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LiabilitiesCurrent" xlink:to="us-gaap_TaxesPayableCurrent_633911330301986530" order="3" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="us-gaap_OtherLiabilitiesCurrent_633911330466662436" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LiabilitiesCurrent" xlink:to="us-gaap_OtherLiabilitiesCurrent_633911330466662436" order="4" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_633911330582123057" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_LiabilitiesCurrent" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_633911330582123057" order="5" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligations_633911335811296997" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Liabilities" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligations_633911335811296997" order="2" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:label="us-gaap_DeferredTaxLiabilitiesNoncurrent_633911335965200292" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Liabilities" xlink:to="us-gaap_DeferredTaxLiabilitiesNoncurrent_633911335965200292" order="3" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_633911336105510098" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_Liabilities" xlink:to="us-gaap_OtherLiabilitiesNoncurrent_633911336105510098" order="4" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity_633846466418685917" xlink:to="loc_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CommonStockValueOutstanding" xlink:label="us-gaap_CommonStockValueOutstanding_634076376635225785" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_CommonStockValueOutstanding_634076376635225785" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital_633911336346911713" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_AdditionalPaidInCapital_633911336346911713" order="2" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_633911336467534397" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_633911336467534397" order="3" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_633911336601125582" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_633911336601125582" order="4" use="optional" weight="1" priority="1" />
  </calculationLink>
  <calculationLink xlink:role="http://www.nscorp.com/role/StatementConsolidatedBalanceSheetsParenthetical" xlink:type="extended" xlink:title="00210 - Statement - Consolidated Balance Sheets (Parenthetical)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/StatementConsolidatedStatementsOfCashFlows" xlink:type="extended" xlink:title="00300 - Statement - Consolidated Statements of Cash Flows">
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_634079843275482733" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_NetCashProvidedByUsedInOperatingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_634079843275482733" xlink:to="loc_NetCashProvidedByUsedInOperatingActivities" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss_633911346769093571" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_ProfitLoss_633911346769093571" order="1" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_Depreciation" xlink:label="us-gaap_Depreciation_633911346875810955" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_Depreciation_633911346875810955" order="2" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_GainLossOnSaleOfPropertyAndInvestments" xlink:label="nsc_GainLossOnSaleOfPropertyAndInvestments" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="nsc_GainLossOnSaleOfPropertyAndInvestments" order="3" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_634080698601091384" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit_634080698601091384" order="4" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_634311212943673439" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable_634311212943673439" order="5" use="optional" weight="-1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_IncreaseDecreaseInMaterialsAndSupplies" xlink:label="nsc_IncreaseDecreaseInMaterialsAndSupplies_633911351310597939" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="nsc_IncreaseDecreaseInMaterialsAndSupplies_633911351310597939" order="6" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_634311213702322727" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingAssets_634311213702322727" order="7" use="optional" weight="-1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_633911351526688923" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_633911351526688923" order="8" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_OtherNet" xlink:label="nsc_OtherNet_633911351705124139" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInOperatingActivities" xlink:to="nsc_OtherNet_633911351705124139" order="9" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_NetCashProvidedByUsedInInvestingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_634079843275482733" xlink:to="loc_NetCashProvidedByUsedInInvestingActivities" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_633911351879965651" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_633911351879965651" order="1" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_633911353192448851" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_633911353192448851" order="2" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsToAcquireInvestments" xlink:label="us-gaap_PaymentsToAcquireInvestments_633911353349321843" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsToAcquireInvestments_633911353349321843" order="3" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_633911353456351723" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_633911353456351723" order="4" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_NetCashProvidedByUsedInFinancingActivities" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_634079843275482733" xlink:to="loc_NetCashProvidedByUsedInFinancingActivities" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_633911353610568499" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_ProceedsFromIssuanceOfLongTermDebt_633911353610568499" order="1" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="us-gaap_RepaymentsOfLongTermDebt_633911353764941523" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_RepaymentsOfLongTermDebt_633911353764941523" order="2" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_633911353925095723" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_ProceedsFromStockOptionsExercised_633911353925095723" order="3" use="optional" weight="1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_634129131840067505" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock_634129131840067505" order="4" use="optional" weight="-1" priority="1" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="us-gaap_PaymentsOfDividends_633911354325246851" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_PaymentsOfDividends_633911354325246851" order="5" use="optional" weight="-1" priority="1" />
  </calculationLink>
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureOtherIncomeNet" xlink:type="extended" xlink:title="10201 - Disclosure - Other Income - Net" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureIncomeTaxes" xlink:type="extended" xlink:title="10301 - Disclosure - Income Taxes" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureFairValue" xlink:type="extended" xlink:title="10401 - Disclosure - Fair Value" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureInvestments" xlink:type="extended" xlink:title="10501 - Disclosure - Investments" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureLeaseCommitments" xlink:type="extended" xlink:title="10901 - Disclosure - Lease Commitments" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureOtherLiabilities" xlink:type="extended" xlink:title="11001 - Disclosure - Other Liabilities" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosurePensionsAndOtherPostretirementBenefits" xlink:type="extended" xlink:title="11101 - Disclosure - Pensions and Other Postretirement Benefits" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureStockBasedCompensation" xlink:type="extended" xlink:title="11201 - Disclosure - Stock-Based Compensation" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureStockRepurchaseProgram" xlink:type="extended" xlink:title="11401 - Disclosure - Stock Repurchase Program" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureEarningsPerShare" xlink:type="extended" xlink:title="11501 - Disclosure - Earnings Per Share" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureCommitmentsAndContingencies" xlink:type="extended" xlink:title="11701 - Disclosure - Commitments and Contingencies" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureFairValueTables" xlink:type="extended" xlink:title="30403 - Disclosure - Fair Value (Tables)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureInvestmentsTables" xlink:type="extended" xlink:title="30503 - Disclosure - Investments (Tables)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureEarningsPerShareTables" xlink:type="extended" xlink:title="31503 - Disclosure - Earnings Per Share (Tables)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureOtherIncomeNetDetails" xlink:type="extended" xlink:title="40204 - Disclosure - Other Income - Net (Details)">
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="us-gaap_OtherNonoperatingIncomeExpense" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_IncomeLossFromEquityInConrail" xlink:label="nsc_IncomeLossFromEquityInConrail_634280135750455548" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="nsc_IncomeLossFromEquityInConrail_634280135750455548" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InterestExpenseOther" xlink:label="us-gaap_InterestExpenseOther_634280086601543522" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_InterestExpenseOther_634280086601543522" order="2" use="optional" weight="-1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="us-gaap_InvestmentIncomeInterest_634280086601543522" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_InvestmentIncomeInterest_634280086601543522" order="3" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_LifeInsuranceCorporateOrBankOwnedChangeInValue" xlink:label="us-gaap_LifeInsuranceCorporateOrBankOwnedChangeInValue_634280086601543522" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_LifeInsuranceCorporateOrBankOwnedChangeInValue_634280086601543522" order="4" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherIncome" xlink:label="us-gaap_OtherIncome_634280086601543522" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_OtherIncome_634280086601543522" order="5" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RentalIncomeNonoperating" xlink:label="us-gaap_RentalIncomeNonoperating_634280086601543522" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_RentalIncomeNonoperating_634280086601543522" order="6" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_TaxesOnNonoperatingProperty" xlink:label="nsc_TaxesOnNonoperatingProperty_634280086601543522" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="nsc_TaxesOnNonoperatingProperty_634280086601543522" order="7" use="optional" weight="-1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RoyaltyIncomeNonoperating" xlink:label="us-gaap_RoyaltyIncomeNonoperating" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense" xlink:to="us-gaap_RoyaltyIncomeNonoperating" order="8" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_NonoperatingDepletionAndDepreciation" xlink:label="nsc_NonoperatingDepletionAndDepreciation_634280085692213693" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_RoyaltyIncomeNonoperating" xlink:to="nsc_NonoperatingDepletionAndDepreciation_634280085692213693" order="1" use="optional" weight="-1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_RoyaltyRevenueFromCoal" xlink:label="us-gaap_RoyaltyRevenueFromCoal_634280085692213693" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_RoyaltyIncomeNonoperating" xlink:to="us-gaap_RoyaltyRevenueFromCoal_634280085692213693" order="2" use="optional" weight="1" priority="2" />
  </calculationLink>
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureIncomeTaxesDetails" xlink:type="extended" xlink:title="40304 - Disclosure - Income Taxes (Details)">
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit_634280951034938189" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentFederalTaxExpenseBenefit_634280951034938189" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit_634280951034938189" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentStateAndLocalTaxExpenseBenefit_634280951034938189" order="2" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit_634280951514017260" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredFederalIncomeTaxExpenseBenefit_634280951514017260" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_634280951514017260" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_634280951514017260" order="2" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsNetNoncurrent" xlink:label="us-gaap_DeferredTaxAssetsNetNoncurrent" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="us-gaap_DeferredTaxAssetsGross" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsNetNoncurrent" xlink:to="us-gaap_DeferredTaxAssetsGross" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsOther" xlink:label="us-gaap_DeferredTaxAssetsOther_634280971128519304" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsOther_634280971128519304" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits_634280971128519304" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits_634280971128519304" order="2" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_DeferredTaxAssetsTaxAccuralsIncludingCasualtyAndOtherClaims" xlink:label="nsc_DeferredTaxAssetsTaxAccuralsIncludingCasualtyAndOtherClaims_634280972291038756" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="nsc_DeferredTaxAssetsTaxAccuralsIncludingCasualtyAndOtherClaims_634280972291038756" order="3" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_634280972612556817" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxAssetsNetNoncurrent" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance_634280972612556817" order="2" use="optional" weight="-1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="us-gaap_DeferredTaxLiabilities" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxLiabilitiesOther" xlink:label="us-gaap_DeferredTaxLiabilitiesOther_634280973192880537" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxLiabilities" xlink:to="us-gaap_DeferredTaxLiabilitiesOther_634280973192880537" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_634280973192880537" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxLiabilities" xlink:to="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_634280973192880537" order="2" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:label="us-gaap_DeferredTaxLiabilitiesNoncurrent" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent_634280973844028711" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:to="us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent_634280973844028711" order="1" use="optional" weight="-1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredTaxAssetsNetCurrent" xlink:label="us-gaap_DeferredTaxAssetsNetCurrent_634280973844028711" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:to="us-gaap_DeferredTaxAssetsNetCurrent_634280973844028711" order="2" use="optional" weight="-1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_634280956776815132" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_634280956776815132" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_634280956776815132" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_634280956776815132" order="2" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_OtherReconciliationOfStatutoryRateToEffectiveRate" xlink:label="nsc_OtherReconciliationOfStatutoryRateToEffectiveRate_634280956776815132" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="nsc_OtherReconciliationOfStatutoryRateToEffectiveRate_634280956776815132" order="3" use="optional" weight="1" priority="2" />
  </calculationLink>
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureFairValueDetails" xlink:type="extended" xlink:title="40404 - Disclosure - Fair Value (Details)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureInvestmentsParentheticalDetails" xlink:type="extended" xlink:title="40514 - Disclosure - Investments (Parenthetical) (Details)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosurePropertiesDetails" xlink:type="extended" xlink:title="40604 - Disclosure - Properties (Details)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureCurrentLiabilitiesDetails" xlink:type="extended" xlink:title="40704 - Disclosure - Current Liabilities (Details)">
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_EquipmentRentsPayableNet" xlink:label="nsc_EquipmentRentsPayableNet" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="nsc_EquipmentRentsPayableNet" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_634285590906783068" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_634285590906783068" order="2" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccountsPayableOtherCurrent" xlink:label="us-gaap_AccountsPayableOtherCurrent_634285590906783068" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccountsPayableOtherCurrent_634285590906783068" order="3" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccruedVacationCurrent" xlink:label="us-gaap_AccruedVacationCurrent_634285590906793069" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccruedVacationCurrent_634285590906793069" order="4" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_DueToConrail" xlink:label="nsc_DueToConrail_634285590906793069" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="nsc_DueToConrail_634285590906793069" order="5" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_CasualtyAndOtherClaimsCurrent" xlink:label="nsc_CasualtyAndOtherClaimsCurrent_634332787647237418" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="nsc_CasualtyAndOtherClaimsCurrent_634332787647237418" order="6" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="us-gaap_OtherLiabilitiesCurrent" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_RetireeBenefitObligations" xlink:label="nsc_RetireeBenefitObligations" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherLiabilitiesCurrent" xlink:to="nsc_RetireeBenefitObligations" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_LiabilitiesForForwardedTraffic" xlink:label="nsc_LiabilitiesForForwardedTraffic" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherLiabilitiesCurrent" xlink:to="nsc_LiabilitiesForForwardedTraffic" order="2" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:label="us-gaap_InterestPayableCurrent_634285591674109793" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherLiabilitiesCurrent" xlink:to="us-gaap_InterestPayableCurrent_634285591674109793" order="3" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent_634285591674109793" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherLiabilitiesCurrent" xlink:to="us-gaap_OtherAccruedLiabilitiesCurrent_634285591674109793" order="4" use="optional" weight="1" priority="2" />
  </calculationLink>
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureDebtNarrativeDetails" xlink:type="extended" xlink:title="40804 - Disclosure - Debt (Narrative) (Details)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureDebtTablesDetails" xlink:type="extended" xlink:title="40814 - Disclosure - Debt (Tables) (Details)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureLeaseCommitmentsDetails" xlink:type="extended" xlink:title="40904 - Disclosure - Lease Commitments (Details)">
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDue" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsDue" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments" xlink:to="us-gaap_CapitalLeasesFutureMinimumPaymentsDue" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears_634287104649922887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CapitalLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears_634287104649922887" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_634287104649922887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CapitalLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_634287104649922887" order="2" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_634287104649922887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CapitalLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_634287104649922887" order="3" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears_634287104649922887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CapitalLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears_634287104649922887" order="4" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter_634287104649922887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CapitalLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter_634287104649922887" order="5" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent" xlink:label="us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent_634287104649922887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CapitalLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent_634287104649922887" order="6" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_ImputedInterestOnCapitalLeases" xlink:label="nsc_ImputedInterestOnCapitalLeases_634287108342766887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments" xlink:to="nsc_ImputedInterestOnCapitalLeases_634287108342766887" order="2" use="optional" weight="-1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_634287104910130887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_634287104910130887" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_634287104910130887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_634287104910130887" order="2" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_634287104910130887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_634287104910130887" order="3" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_634287104910130887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_634287104910130887" order="4" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_634287104910130887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_634287104910130887" order="5" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_634287104910130887" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_634287104910130887" order="6" use="optional" weight="1" priority="2" />
  </calculationLink>
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureOtherLiabilitiesDetails" xlink:type="extended" xlink:title="41004 - Disclosure - Other Liabilities (Details)">
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="us-gaap_OtherLiabilitiesNoncurrent" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_AccruedIncomeTaxesNoncurrent" xlink:label="us-gaap_AccruedIncomeTaxesNoncurrent_634287133516071387" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_AccruedIncomeTaxesNoncurrent_634287133516071387" order="1" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_CasualtyAndOtherClaims" xlink:label="nsc_CasualtyAndOtherClaims_634287133516071387" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="nsc_CasualtyAndOtherClaims_634287133516071387" order="2" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent" xlink:label="us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_634287133516071387" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_634287133516071387" order="3" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_DueToAffiliateCurrentAndNoncurrent" xlink:label="us-gaap_DueToAffiliateCurrentAndNoncurrent_634287133516071387" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_DueToAffiliateCurrentAndNoncurrent_634287133516071387" order="4" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_NetPensionObligations" xlink:label="nsc_NetPensionObligations_634287133516071387" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="nsc_NetPensionObligations_634287133516071387" order="5" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/elts/us-gaap-2009-01-31.xsd#us-gaap_OtherAccruedLiabilitiesNoncurrent" xlink:label="us-gaap_OtherAccruedLiabilitiesNoncurrent_634287133516071387" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherAccruedLiabilitiesNoncurrent_634287133516071387" order="6" use="optional" weight="1" priority="2" />
    <loc xlink:type="locator" xlink:href="nsc-20101231.xsd#nsc_RetireeHealthAndDeathBenefitObligations" xlink:label="nsc_RetireeHealthAndDeathBenefitObligations_634287133516071387" />
    <calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="nsc_RetireeHealthAndDeathBenefitObligations_634287133516071387" order="7" use="optional" weight="1" priority="2" />
  </calculationLink>
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosurePensionsAndOtherPostretirementBenefitsNarrativeDetails" xlink:type="extended" xlink:title="41104 - Disclosure - Pensions and Other Postretirement Benefits (Narrative) (Details)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosurePensionsAndOtherPostretirementBenefitsPensionAndOtherPostretirementBenefitCostComponentsDetails" xlink:type="extended" xlink:title="41124 - Disclosure - Pensions and Other Postretirement Benefits (Pension and other postretirement benefit cost components) (Details)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosurePensionsAndOtherPostretirementBenefitsPensionPlanWeightedAverageAssetAllocationsByAssetCategoryDetails" xlink:type="extended" xlink:title="41164 - Disclosure - Pensions and Other Postretirement Benefits (Pension plan weighted-average asset allocations by asset category) (Details)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureStockholdersEquityDetails" xlink:type="extended" xlink:title="41304 - Disclosure - Stockholders' Equity (Details)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureStockRepurchaseProgramDetails" xlink:type="extended" xlink:title="41404 - Disclosure - Stock Repurchase Program (Details)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureEarningsPerShareDetails" xlink:type="extended" xlink:title="41504 - Disclosure - Earnings Per Share (Details)" />
  <calculationLink xlink:role="http://www.nscorp.com/role/DisclosureCommitmentsAndContingenciesDetails" xlink:type="extended" xlink:title="41704 - Disclosure - Commitments and Contingencies (Details)" />
</linkbase>