Q:

Is there a french translation for Endless Space? 

I would like to play Endless Space in French.  Is there any way to do it?  I use Steam in French already. 

A:

As you can see in the red marked box endless space is supporting french but text only (i used french steam store because you asked for french)

If you're still not able to start your game in french, try the following
Changing the language of individual games
The language of many games can be changed independently from the Steam client language. 

Log into your Steam account
Right click on a game from the Steam game library and choose Properties. 
Go to the Language tab
Select the language you wish to use from the drop-down menu 
Click OK
If the game supports the language you have selected, files for that language may need to be downloaded before you can play. 

Source: Steam How-To's

