Algeria belongs to the following international organizations:
- African Development Bank –Founding member – Khartoum, 04th August 1963.
- African Union – Founding member -Addis Abeba, 25th May 1963.
- Arab Bank for Economic Development in Africa. Founding member – Algiers 28th November 1973. Established pursuant to the resolution of the 6th Arab Summit Conference at Algiers (28th November 1973).
- Arab Fund for Economic and Social Development
- Arab Maghreb Union – Founding member – Marrakech 17th February 1989.
- Arab Monetary Fund. Founding member 1976.
- Bank for International Settlements
- Food and Agriculture Organization. 19th November 1963.
- Group of 15
- Group of 24
- Group of 77
- International Atomic Energy Agency
- International Bank for Reconstruction and Development (World Bank)
- International Chamber of Commerce
- International Civil Aviation Organization
- International Confederation of Free Trade Unions
- International Criminal Court (signatory).
- International Criminal Police Organization
- International Development Association
- International Federation of Red Cross and Red Crescent Societies
- International Finance Corporation
- International Fund for Agricultural Development
- International Hydrographic Organization
- International Labour Organization
- International Maritime Organization
- International Monetary Fund
- International Olympic Committee
- International Organization for Migration
- International Organization for Standardization
- International Red Cross and Red Crescent Movement
- International Telecommunication Union
- Islamic Development Bank
- League of Arab States
- Multilateral Investment Geographic Agency
- Nonaligned Movement
- Organization for the Prohibition of Chemical Weapons. Signature: 13/01/1993- Ratification: 14/08/1995 –
Entry into Force: 29/04/1997. - Organization for Security and Co-operation in Europe (partner)
- Organization of American States (observer)
- Organization of Arab Petroleum Exporting Countries
- Organization of the Islamic Conference – 1969.
- Organization of the Petroleum Exporting Countries
- United Nations – 08th October 1962.
- United Nations Conference on Trade and Development
- United Nations Educational
- Scientific and Cultural Organization
- United Nations High Commissioner for Refugees
- United Nations Industrial Development Organization
- Universal Postal Union
- World Customs Organization
- World Health Organization
- World Intellectual Property Organization
- World Meteorological Organization
- World Tourism Organization
- World Trade Organization (observer).