Exhibit

We consent to the incorporation by reference in the registration statement (No. 333-55404, 333-63444, 333- 83124, 333-104827, 333-142705, 333-203801, 333-207413, and 333-224691) on Forms S-3 and S-8 of

Occidental Petroleum Corporation of our reports dated February 21, 2019, with respect to the consolidated balance sheets of Occidental Petroleum Corporation as of December 31, 2018 and 2017, the related consolidated statements of operations, comprehensive income, stockholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2018, and the related notes and financial statement schedule II (collectively, the “consolidated financial statements”), and the effectiveness of internal control over financial reporting as of December 31, 2018, which reports appear in the December 31, 2018 annual report on Form 10-K of Occidental Petroleum Corporation.