* France (This is the largest and most obvious!)
* Belgium (Specifically, the Wallonia region)
* Switzerland (Specifically, the cantons of Geneva, Vaud, Fribourg, and parts of Bern and Neuchâtel)
* Luxembourg (Alongside German and Portuguese)
* Monaco
* Andorra (Alongside Catalan)
It's important to note that while French is an official language in several other countries, like Canada or several African nations, those are not part of Europe.