* βeta
| Capital | (*) See Notes at bottom of the table | |||
| N | Flag | Member Countries | name | |
| 1 | Algeria | Algiers | ||
| 2 | Bahrain | Manama | ||
| 3 | Egypt | Cairo | ||
| 4 | Iraq | Baghdad | ||
| 5 | Kuwait | Kuwait City | ||
| 6 | Libya | Tripoli | ||
| 7 | Qatar | Doha | ||
| 8 | Saudi Arabia | Riyadh | ||
| 9 | Syria | Damascus | ||
| 10 | United Arab Emirates | Abu Dhabi | ||
| Abbreviation : OAPEC Title : Organization of Arab Petroleum Exporting Countries Aim : to promote cooperation in the petroleum industry. Established in : 9 January 1968 |
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| Capital name | ||||