This description provides an overview of the countries in which French is the official language. It highlights the fact that French is the official language in 29 countries, including France, Belgium, Canada, Switzerland, and Luxembourg. It also provides a brief overview of the cultural and linguistic diversity of these countries.
From Wikipedia
This is a list of official languages by country and territory. It includes all languages that have official language status either statewide or in a part of the state, or that have status as a national language, regional language, or minority language.