How many countries in the world have their first language as french?

It's a bit tricky to give a definitive answer to how many countries have French as their "first language." Here's why:

* Official vs. First Language: Many countries have French as an official language, meaning it's used in government and legal proceedings, but not necessarily the most spoken language by the population.

* Regional Languages: Within a country, there might be multiple languages spoken, with French being dominant in certain areas but not the sole language spoken throughout.

That being said, here are some ways to look at it:

* Officially French: There are 29 countries where French is an official language.

* Most Spoken Language: It's harder to say definitively how many countries have French as the most spoken language. However, in countries like France, Belgium, Switzerland, Canada (Quebec), and Luxembourg, French is widely spoken and considered a dominant language.

So, the answer depends on how you define "first language." There are 29 countries where French is an official language, but it's spoken as the dominant language in a smaller number of countries.