All over the world, Seong-Ok (성옥 
, Seong-Ok 
) is a rare epicene forename. The forename Seong-Ok is habitual in Eastern Asia, particularly South Korea, where it is quite a rare epicene name. Parts of the name also exists independently as a last name Seong, and a last name Ok.
| VARIANT | COUNTRY |
|---|---|
| 성옥 | South Korea |
| Seong-Ok | United States |
| kim seong-ok South Korean para table tennis player (b. 1967) |
|
|
| seong-ok bai |
|