It's important to note that this number can vary slightly depending on how "official" is defined. Some countries have French as one of several official languages, while others may have French as the primary working language even if it's not officially designated.
Here are some examples of countries with French as an official language:
* Europe: France, Belgium, Switzerland, Monaco, Luxembourg
* Africa: Algeria, Benin, Burkina Faso, Burundi, Cameroon, Central African Republic, Chad, Comoros, Congo, Côte d'Ivoire, Democratic Republic of the Congo, Gabon, Guinea, Madagascar, Mali, Mauritania, Niger, Rwanda, Senegal, Togo
* North America: Canada
* Oceania: Vanuatu
Do you have any other questions about French language or culture?