Surname Phanthiya (Phanthiya 
) , in all the world, is an extremely rare family name. The family name Phanthiya is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, Phanthiya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phanthiya | Thailand |
Langla, Prasomkun, Kongrangsee, Ritthichai, Thanawothipong, and Khotchaprasoet