Last name Sangyoun (Sangyoun 
) , throughout the world, is an extremely rare family name. The family name Sangyoun is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, Sangyoun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sangyoun | South Korea, Australia, Thailand, United States, Canada |