Cognomen Supphadet (ศุภเดช 
, Supphadet ) , around the world, is a very rare family name. The family name Supphadet is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Predominantly, Supphadet is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Supphadet, ศุภเดช | Thailand |