EX-23 16 dex23.txt CONSENT OF PRICEWATERHOUSECOOPERS LLP EXHIBIT 23 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (Nos. 33-63719, 333-58415-01 and 333-103097-02) and Form S-8 (Nos. 33-43231, 33-43309, 333-09685, 333-25039, 333-36987, 333-62199, 333-93223, 333-93225, 333-61532, 333-73540, 333-85864, 333-99147, 333-102304 and 333-102305) of Unocal Corporation of our report dated February 14, 2003, relating to the consolidated financial statements and financial statement schedule, which appears in this Annual Report on Form 10-K. PricewaterhouseCoopers LLP Los Angeles, California March 20, 2003