Saudi Aramco (Arabic: ?????? ????????? ?Ar?mk? s-Sa??diyyah), officially the Saudi Arabian Oil Company, is a Saudi Arabian national oil and natural gas company based in Dhahran, Saudi Arabia.[4][5] 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.[6][7][8]

Saudi Aramco has both the largest proven crude oil reserves, at more than 260 billion barrels (4.1?010 m3), and largest daily oil production.[9] Headquartered in Dhahran, Saudi Arabia,[10] Saudi Aramco operates the world's largest single hydrocarbon network, the Master Gas System. Its yearly production is 7.9 billion barrels (1.26?09 m3),[11] and it managed over 100 oil and gas fields in Saudi Arabia, including 279 trillion standard cubic feet (scf) of natural gas reserves.[11] Saudi Aramco owns the Ghawar Field, the world's largest oil field, and the Shaybah Field, one of the world's largest oil fields.