Surname Itthiphan (Itthiphan 
) , in the world, is an extremely rare last name. Much more frequently, Itthiphan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Itthiphan | Thailand |
Khamthui, Palawong, Rittidej, Jitnapapan, Sakunwanthanasak, and Thiangwong