Europe:
* France: The obvious one! French is the official and primary language of France.
* Belgium: French is one of the three official languages of Belgium, alongside Dutch and German.
* Switzerland: French is one of the four official languages of Switzerland, along with German, Italian, and Romansh.
* Luxembourg: French is an official language in Luxembourg alongside Luxembourgish and German.
* Monaco: French is the official language of this small principality.
Africa:
* Algeria: French is an official language alongside Arabic.
* Benin: French is the official language.
* Burkina Faso: French is the official language.
* Burundi: French is an official language alongside Kirundi.
* Cameroon: French is an official language alongside English.
* Central African Republic: French is the official language.
* Chad: French is the official language.
* Comoros: French is an official language alongside Arabic and Comorian.
* Côte d'Ivoire: French is the official language.
* Democratic Republic of the Congo: French is an official language alongside Swahili and Lingala.
* Djibouti: French is an official language alongside Arabic and Somali.
* Gabon: French is the official language.
* Guinea: French is the official language.
* Guinea-Bissau: French is an official language alongside Portuguese.
* Madagascar: French is an official language alongside Malagasy.
* Mali: French is the official language.
* Mauritania: French is an official language alongside Arabic.
* Niger: French is the official language.
* Republic of the Congo: French is the official language.
* Rwanda: French is an official language alongside Kinyarwanda and English.
* Senegal: French is the official language.
* Seychelles: French is an official language alongside English and Seychellois Creole.
* Togo: French is the official language.
North America:
* Canada: French is an official language alongside English.
South America:
* Haiti: French is the official language.
Oceania:
* Vanuatu: French is an official language alongside English and Bislama.
Other:
* Wallis and Futuna: French is the official language of this French overseas territory.
* New Caledonia: French is an official language alongside Kanak languages and English.
It's important to note that even though French is an official language in these countries, it doesn't mean that everyone speaks it. In many of these countries, local languages are more widely spoken. However, French still holds significant cultural and historical importance, and it is often used in government, education, and commerce.