1 ITEM 14(A)3, EXHIBIT 21 SUBSIDIARIES OF THE REGISTRANT Tesoro Petroleum Corporation is publicly held and has no parent. The subsidiaries listed below are wholly-owned. Small or inactive subsidiaries are omitted from the list below. Such omitted subsidiaries, considered in the aggregate as a single subsidiary, would not constitute a "significant subsidiary" at the end of the year covered by this annual report. INCORPORATED OR ORGANIZED UNDER LAWS NAME OF SUBSIDIARY(1) OF --------------------- ------------- Tesoro Alaska Petroleum Company............................. Delaware Tesoro Alaska Pipeline Company.............................. Delaware Tesoro Bolivia Petroleum Company............................ Texas Tesoro Exploration and Production Company(2)................ Delaware Tesoro Financial Services Holding Company................... Delaware Victory Finance Company................................ Delaware Tesoro Gas Resources Company, Inc.(2)....................... Delaware Tesoro E&P Company, L.P.(2)............................ Delaware Tesoro Marine Services Company.............................. Delaware Tesoro Coastwide Services Company...................... Delaware Tesoro Natural Gas Company.................................. Delaware Tesoro Northstore Company................................... Alaska - --------------- (1) Where the name of a subsidiary is indented, it is wholly-owned by its immediate parent listed at the margin above it, unless otherwise indicated. (2) Tesoro E&P Company, L.P. is owned 99% by Tesoro Gas Resources Company, Inc. and 1% by Tesoro Exploration and Production Company.