Family name ศุภยงค์ (ศุภยงค์ 
, Suppayong , Suphuyong ) , globally, is a very rare cognomen. The surname ศุภยงค์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, ศุภยงค์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Suphuyong, ศุภยงค์, Suppayong | Thailand |