OPEC Membership Expansion Waves (1962–1980)

1. OPEC founded at the Baghdad Conference

   Sep 14, 1960Labels: Founding Members, Baghdad Conference

   • OPEC History
   • Britannica

2. Qatar becomes OPEC’s first new member

   Jan 1, 1961Labels: Qatar

   • OPEC History
   • Britannica

3. Indonesia joins, widening OPEC beyond the Middle East

   Jan 1, 1962Labels: Indonesia

   • OPEC History
   • Oxford Academic

4. Libya joins during a wave of producer assertiveness

   Jan 1, 1962Labels: Libya

   • OPEC History
   • OPEC Speech

5. OPEC headquarters moves to Vienna

   Sep 1, 1965Labels: Vienna Headquarters

   • OPEC History

6. Abu Dhabi joins, a step toward UAE participation

   Jan 1, 1967Labels: Abu Dhabi, UAE transition

   • OPEC History
   • Britannica

7. Algeria joins, strengthening OPEC’s African presence

   Jan 1, 1969Labels: Algeria

   • OPEC History
   • OPEC Speech

8. Nigeria joins, expanding West African representation

   Jul 1, 1971Labels: Nigeria

   • OPEC History
   • OPEC Nigeria50

9. Ecuador joins, bringing OPEC into South America’s Andes

   Jan 1, 1973Labels: Ecuador

   • OPEC History
   • Britannica

10. 1973 oil crisis accelerates OPEC’s global leverage

    Oct 1, 1973Labels: 1973 Oil, Arab Embargo

    • Britannica
    • Britannica

11. UAE assumes Abu Dhabi’s OPEC membership

    Jan 1, 1974Labels: United Arab, Membership Transfer

    • Britannica
    • OPEC Speech

12. Gabon joins, deepening Central Africa’s role in OPEC

    Jan 1, 1975Labels: Gabon

    • OPEC Gabon
    • Britannica

13. First OPEC Summit and Algiers Declaration

    Jan 1, 1975Labels: Algiers Summit, Solemn Declaration

    • OPEC Speech
    • OPEC Speech

14. Expansion wave closes as OPEC consolidates membership

    Dec 31, 1980Labels: Consolidation 1980

    • OPEC History
    • Britannica