Cognomen Supagan (Supagan 
) , worldwide, is a very rare family name. The cognomen Supagan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname, and Philippines, where it is an extremely rare surname. Also, Supagan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Supagan | United States, Thailand, Philippines |