Family name Yangsup (Yangsup 
) , in the entire world, is a rare cognomen. The cognomen Yangsup is habitual in Thailand, where it is a rare surname, and China, where it is an extremely rare surname. More frequently, Yangsup is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yangsup | China, South Korea, United States, Thailand |