墨西哥石油公司（Petróleos Mexicanos或Pemex）是墨西哥的国家石油公司，其为世界前十大石油公司。

Petróleos Mexicanos, which translates as Mexican Petroleums and is trademarked and better known as Pemex (Spanish pronunciation: [ˈpemeks]), is the Mexican state-owned petroleum company, created in 1938 by nationalization or expropriation of all private, foreign, and domestic companies at that time. Pemex has a total asset worth of $415.75 billion, and is the world’s second largest non-publicly listed company by total market value, and Latin America’s second largest enterprise by annual revenue as of 2009, surpassed only by Petrobras (the Brazilian National Oil Company). The majority of its shares are not listed publicly and are under control of the Mexican government, with the value of its publicly listed shares totaling $202 billion in 2010, representing approximately one quarter of the company’s total net worth. Emilio Lozoya Austin was the CEO of Pemex until February 8, 2016. The new CEO is Dr. José Antonio González Anaya.