The largest holders and owners of global oil reserves are overwhelmingly sovereign nation-states operating through massive state-owned national oil companies rather than private publicly traded corporations. Nations located in the Middle East—such as Saudi Arabia, Venezuela, Iran, Iraq, and the United Arab Emirates—control the vast majority of proven global crude oil reserves. Among corporate entities, national giants like Saudi Aramco hold the largest sovereign-backed production volumes and vast underground petroleum reserves, dwarfing private Western international oil majors.