<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE CONDENSED CONSOLIDATED BALANCE SHEET AND THE CONDENSED CONSOLIDATED STATEMENT OF INCOME FOR THE THREE MONTHS ENDED MARCH 31, 2000, CONTAINED IN TRANSCONTINENTAL GAS PIPE LINE CORPORATION'S 2000 FIRST QUARTER REPORT ON FORM 10-Q AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. </LEGEND> <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-END> MAR-31-2000 <CASH> 1,197 <SECURITIES> 0 <RECEIVABLES> 16,335 <ALLOWANCES> 0 <INVENTORY> 68,201 <CURRENT-ASSETS> 766,874 <PP&E> 4,488,339 <DEPRECIATION> 824,179 <TOTAL-ASSETS> 4,685,049 <CURRENT-LIABILITIES> 459,710 <BONDS> 975,214 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 2,257,223 <TOTAL-LIABILITY-AND-EQUITY> 4,685,049 <SALES> 201,082 <TOTAL-REVENUES> 411,037 <CGS> 201,089 <TOTAL-COSTS> 310,352 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 25,230 <INCOME-PRETAX> 53,954 <INCOME-TAX> 19,959 <INCOME-CONTINUING> 33,995 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 33,995 <EPS-BASIC> 0 <EPS-DILUTED> 0