| Name | Participants | Dates | Stamps | ||
| Abidjan Games | 6 | (with Central African Republic - Niger) | 1962 | 18 | |
| African & Malagasy Union | 12 | (with Cameroun - Senegal) | 1962 | 12 | |
| Air Afrique | 8 | (with Central African Republic - Senegal) | 1961 - 1962 | 8 | (incomplete) |
| ASECNA | 10 | (with Cameroun - Niger) | 1969 - 1970 | 10 | (incomplete) |
| CCTA | 12 | (with Cameroun - Niger) | 1960 | 12 | (incomplete) |
| Colonial Exposition | 25 | (with Cameroun - Wallis & Futuna Islands) | 1931 | 100 | (incomplete) |
| Cooperation | 13 | (with Cameroun - Togo) | 1964 | 14 | (incomplete) |
| Monetary Union | 6 | (with Dahomey - Senegal) | 1967 | 6 | (incomplete) |