* Benin
* Burkina Faso
* Burundi
* Cameroon
* Central African Republic
* Chad
* Côte d'Ivoire
* Democratic Republic of the Congo
* Djibouti
* Gabon
* Guinea
* Madagascar
* Mali
* Niger
* Republic of the Congo
* Rwanda
* Senegal
* Togo
This is not an exhaustive list, but it gives you a good idea of the countries in Africa where French is an official language.