Surname Jitjaimun (Jitjaimun 
) , all over the world, is an extremely rare family name. The family name Jitjaimun is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Jitjaimun | Thailand |
Kaewjai, Jongjai, Julladit, and Jarasphong