While renewable energy is growing, oil still plays a dominant role in meeting global energy needs.

This visualization, via Visual Capitalist's Bruno Venditti, ranks countries by the size of their proven oil reserves at the end of 2024.

The data for this graphic comes from OPEC's Annual Statistical Bulletin 2025. Figures represent proven oil reserves as of year-end 2024 and are measured in billions of barrels. The data includes conventional crude oil as well as oil sands.

Four Countries Dominate Global Oil Reserves

Global oil reserves are highly concentrated.

Venezuela ranks first with an estimated 303 billion barrels of oil reserves. However, turning this vast resource base into economic and geopolitical power has proven difficult, as ongoing U.S. sanctions and the recent seizure of Venezuelan oil shipments under the Trump administration continue to limit the Maduro government's ability to export crude and fully monetize its reserves.

Saudi Arabia follows the South American country with 267 billion barrels. Iran, Canada, and Iraq round out the top five.