Last name Suwanphen (Suwanphen 
) , in the world, is a very rare surname. The cognomen Suwanphen is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Suwanphen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Suwanphen | Thailand |