1. Senegal: Located in West Africa, Senegal has French as its official language.
2. Cameroon: Situated in Central Africa, Cameroon has both French and English as official languages.
3. Côte d'Ivoire: Located in West Africa, Côte d'Ivoire (Ivory Coast) has French as its official language.
4. Democratic Republic of the Congo: A large country in Central Africa, the Democratic Republic of the Congo has French as its official language.