Last name Prohsunthon (Prohsunthon 
) , globally, is a very rare surname. The cognomen Prohsunthon is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Prohsunthon is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Prohsunthon | Thailand |