* Europe: France, Belgium, Switzerland, Monaco, Luxembourg, and parts of Canada.
* Africa: Many countries in North and West Africa, including Senegal, Côte d'Ivoire, Mali, Cameroon, and Algeria.
* North America: Quebec, Canada, and some parts of the United States (Louisiana).
* South America: French Guiana (a French overseas department).
It's important to note that "speaking French" can mean different things. Some countries have French as their official language, while in others, it is a widely spoken second language.