Global Oil Supply Dominated by Top Five Countries

The global crude oil production landscape is dominated by just five countries, which collectively produce half of the world's oil. According to the U.S. Energy Information Administration, in 2025, these countries produced a staggering 32% of global crude oil, with the Middle East being the largest regional bloc.

The top three crude oil producers were the United States, Russia, and Saudi Arabia, accounting for nearly 40% of global supply. The U.S. was the world's largest producer, producing 13.58 million barrels per day (mb/d), followed by Russia at 9.87 mb/d and Saudi Arabia at 9.51 mb/d.

The concentration of output in a few countries and regions becomes even clearer lower down the ranking of oil producers. The top 10 countries accounted for 72.2% of global production, meaning all remaining producers combined contributed less than 28%. This level of concentration means a small number of countries have an outsized influence on global oil supply.