The Organization of the Petroleum Exporting Countries (OPEC) is a cartel of 12 countries made up of Algeria, Angola, Ecuador, Iran, Iraq, Kuwait, Libya, Nigeria, Qatar, Saudi Arabia, the United Arab Emirates, and Venezuela. The organization has maintained its headquarters in Vienna since 1965 and hosts regular meetings among the oil ministers of its Member Countries.

The Eurasian Economic Community (EurAsEC or EAEC or EEC) was founded in May 2001, and merged with the Central Asian Cooperation Organization in 2005, it aims are to create an EU like organisation.

The Commonwealth of Independent States (CIS) is a regional organization whose participating countries are former Soviet Republics. Although the CIS has few supranational powers, it is more than a purely symbolic organization, possessing coordinating powers in the realm of trade, finance, lawmaking, and security. It has also promoted cooperation on democratization and cross-border crime prevention. As a regional organization, CIS participates in UN peacekeeping forces.

The Arab League officially called the League of Arab States is a regional organization of Arab states in Southwest Asia, and North and Northeast Africa. The Arab League currently has 22 members. The main goal of the league is to "draw closer the relations between member States and co-ordinate collaboration between them, to safeguard their independence and sovereignty, and to consider in a general way the affairs and interests of the Arab countries."

The Nordic Council and the Nordic Council of Ministers is an intergovernmental forum for co-operation between the Nordic countries. It was established following World War II and its first concrete result was the introduction in 1952 of a common labour market and free movement across borders without passports for the countries' citizens.