1. Senegal: French is the official language.
2. Côte d'Ivoire: French is the official language.
3. Cameroon: French is one of the two official languages (along with English).
4. Burkina Faso: French is the official language.
5. Democratic Republic of the Congo: French is one of the four official languages (along with English, Swahili, and Lingala).
6. Madagascar: French is one of the two official languages (along with Malagasy).
It's important to note that while French is the official language in these countries, many other languages are spoken as well.