Photo of Mark A. Nelson

Mark A. Nelson

Vice Chairman and Executive Vice President, Strategy, Policy & Development

Mark A. Nelson, 59, is vice chairman and executive vice president, Strategy, Policy & Development. In addition to his corporate responsibilities, Nelson leads Chevron Strategy & Sustainability, Corporate Affairs, and Corporate Business Development.

Previously, Nelson was executive vice president, Downstream & Chemicals, a position he held from 2019–2022, with responsibilities for directing the company’s worldwide manufacturing, marketing, lubricants, chemicals and Oronite additives businesses. He also oversaw Chevron’s joint-venture Chevron Phillips Chemical Company.

Other positions include vice president, Midstream, Strategy & Policy where he was responsible for the company’s shipping, pipeline, power and energy management, and supply and trading operating units, corporate strategic planning and policy, government and public affairs; vice president, Strategic Planning for Chevron; president, International Products and president, Chevron Canada Limited.

With more than 35 years of experience, Nelson has served in a number of leadership positions with increasing responsibilities within the company in retail, marketing, operations and business planning. Nelson also served on several advisory boards and councils, including Singapore’s Economic Development Board and the Canadian Council of Chief Executives.

Nelson joined Chevron U.S.A. Inc. in 1985 as an engineer based in San Ramon, California.


A native of Ventura, California, Nelson graduated from California Polytechnic State University, where he earned a Bachelor’s degree in civil engineering.

Updated: February 2023