Cognomen Xadier (Xadier 
) , in the world, is a very rare surname. The family name Xadier is habitual in Latin America and the Caribbean, particularly Venezuela, where it is a very rare surname, Colombia, and Mexico, where it is an extremely rare surname. More prevalently, Xadier is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Xadier | Mexico, Colombia, Puerto Rico, United States, Venezuela |