OPEC (Organisation of Petroleum Exporting Countries)

Headquarters - Vienna
Member Country - Capital
1. Algeria---Algiers
2. Angola---Luanda
3. Ecuador---Quito
4. Iran---Teheran
5. Iraq---Baghdad
6. Kuwait---Kuwait City
7. Libya---Tripoli
8. Nigeria---Abuja
9. Qatar---Doha
10. Saudi Arabia---Riyadh
11. U.A.E--- Abu Dhabi
12. Venezuala---Caracas