The five countries that established the Organization of Petroleum Exporting Countries (OPEC) are

The five countries that established the Organization of Petroleum Exporting Countries (OPEC) are Kuwait, Venezuela, Iran, Iraq, and Saudi Arabia. OPEC is an international organization that was founded in 1960 to coordinate the petroleum policies of its member countries and to provide a platform for oil-producing nations to negotiate with oil-consuming countries. These five founding members established OPEC with the aim of controlling the price and supply of oil in the global market. Over the years, other countries have joined OPEC, and the organization has become a powerful force in the global oil industry. As of 2021, OPEC has 13 member countries, which collectively control more than 40% of the world's oil production and around 73% of the world's "proven" oil reserves.