* Europe: France, Belgium, Switzerland, Luxembourg, Monaco, and parts of Canada.
* Africa: Many former French colonies in West and Central Africa, such as Senegal, Ivory Coast, Cameroon, and Congo.
* North America: Quebec, Canada.
* South America: French Guiana (an overseas region of France).
* Oceania: New Caledonia (an overseas territory of France).
While French is an official language in these regions, its prevalence varies greatly. In some countries, it's the primary language, while in others, it's a significant minority language or used mainly in government and education.