I. French is the official language of France and its overseas territories* as well as 14 other countries:
- Bénin
- Burkina Faso
- Central African Republic
- Congo (Democratic Republic of)
- Congo (Republic of)
- Côte d'Ivoire
- Gabon
- Guinea
- Luxembourg
- Mali
- Monaco
- Niger
- Sénégal
- Togo
Départements d'outre-mer (DOM)
French Guiana, Guadeloupe, Martinique, Réunion
Territoires d'outre mer (TOM)
French Polynesia, New Caledonia, Wallis and Futuna, French southern & Antarctic lands
Collectivités territoriales
Saint Pierre and Miquelon, Mayotte
French is also the official language of certain regions of multilingual countries:
- Belgium: Wallonie region
- Canada: Québec province
- Switzerland: Jura, Genève, Neuchâtel, and Vaud districts
- Belgium
- Burundi
- Cameroon
- Canada
- Chad
- Channel Islands (Guernsey and Jersey)
- Comoros
- Djibouti
- Equatorial Guinea
- Haiti (the two official languages are French and French Creole)
- Madagascar
- Rwanda
- Seychelles
- Switzerland
- and Vanuatu

