​Saudi Aramco is the Saudi Arabian Oil Company, most popularly known just as Aramco (formerly Arabian-American Oil Company) is Saudi Arabian national petroleum and natural gas company based in Dhahran, Saudi Arabia. Saudi Aramco's value has been estimated at up to US$10 trillion in the Financial Times, making it the world's most valuable company.
Saudi Aramco has both the world's largest proven crude oil reserves, at more than 260 billion barrels, and largest daily oil production. Saudi Aramco owns, operates and develops all energy resources based in Saudi Arabia.