French has about 360,000,000 million native speakers worldwide.
It is an official language in 28 countries and is one of the most studied second-languages in the world. Estimates vary widely on how many total native and secondary speakers there are in the world, but it is generally in range of 270 - 370 million.
There are also several dialects and French-based creole languages, such as that of Haiti. Due to its continuing popularity in Francophone Africa, it is one of the fastest growing languages in the world.