What is the name of the world's largest oil company by revenue?

Saudi Aramco is the world’s largest oil company by revenue. Officially known as Saudi Arabian Oil Company, it operates across oil and gas exploration, production, refining, chemicals, and distribution, making it one of the most financially significant energy companies ever established.

The company traces its origins to an oil concession granted to Standard Oil of California in 1933. Commercial oil production began near Dammam in 1938, and Saudi Arabia gradually increased its ownership until the state took full control in the 1980s. Saudi Aramco later became publicly listed on the Saudi Exchange in 2019.

A frequent mix-up is using “largest” to mean largest by reserves, production, market capitalization, or revenue. Those rankings can differ and can change with oil prices and exchange rates. By revenue among oil companies, however, Saudi Aramco is the canonical answer; Chevron, Shell, and ExxonMobil are major competitors but are smaller on this measure.