Surname Sung-Hun (성훈 
, 승훈 , Sung-Hun 
) , in all the world, is an extremely rare cognomen. The surname Sung-Hun is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Much more frequently, Sung-Hun is the forename as well as the last name. Parts of the name also exists independently as a last name Sung, and a last name Hun.
| VARIANT | COUNTRY |
|---|---|
| 성훈, 승훈 | South Korea |
| Sung-Hun | United States, South Korea |
Seung-Hoon, Seung-Hun, Seunghun, and スンフン