| Name | Participants | Dates | Stamps | ||
| African & Malagasy Union | 12 | (with Cameroun - Upper Volta) | 1962 | 12 | |
| Caillie | 8 | (with Dahomey - Togo) | 1939 | 24 | |
| CCTA | 12 | (with Cameroun - Upper Volta) | 1960 | 12 | (incomplete) |
| Colonial Exposition | 25 | (with Cameroun - Wallis & Futuna Islands) | 1931 | 100 | (incomplete) |
| Cooperation | 13 | (with Cameroun - Upper Volta) | 1964 | 14 | (incomplete) |
| Curie | 22 | (with Cameroun - Togo) | 1938 | 22 | (incomplete) |
| Development Bank | 6 | (with Cameroun - Senegal) | 1969 | 7 | (incomplete) |
| Monetary Union | 6 | (with Dahomey - Upper Volta) | 1967 | 6 | (incomplete) |
| New York World's Fair | 24 | (with Cameroun - Wallis & Futuna Islands) | 1939 | 48 | (incomplete) |
| Paris International Exposition | 21 | (with Cameroun - Togo) | 1937 | 127 | (incomplete) |
| West African Monetary Union | 5 | (with Ivory Coast - Togo) | 1972 | 5 | (incomplete) |