Family name Grax (Grax 
) , in all the world, is a very rare last name. The surname Grax is habitual in France, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Grax is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grax | Brazil, Mexico, France, United States, United Kingdom |
| sébastien grax French footballer, FR (b. 1984) |
|