Family name Xaj (Xaj 
) , around the world, is a very rare cognomen. The last name Xaj is habitual in South-eastern Asia, particularly Indonesia, where it is a very rare surname, and Thailand, where it is an extremely rare surname. Much less frequently, Xaj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Xaj | Thailand, Indonesia |