The term Organization of the Petroleum Exporting Countries (OPEC) refers to a group of 13 of the world’s major oil-exporting nations. OPEC was founded in 1960 to coordinate the petroleum policies of its members and to provide member states with technical and economic aid. OPEC is a cartel that aims to manage the supply of oil in an effort to set the price of oil on the world market, in order to avoid fluctuations that might affect the economies of both producing and purchasing countries.

Countries that belong to OPEC include Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela (the five founders), plus Algeria, Angola, Congo, Equatorial Guinea, Gabon, Libya, Nigeria, and the United Arab Emirates.