Ko (Korean surname)
| Pronunciation | Go, Goh, Koh | 
|---|---|
| Language(s) | Korean | 
| Origin | |
| Meaning | high | 
| Region of origin | Korean peninsula | 
| Other names | |
| Variant form(s) | Gao, Cao | 
| Korean name | |
| Hangul | 고 | 
| Hanja | 髙 | 
| RR | Go | 
| MR | Ko | 
Ko (Korean: 고; Hanja: 髙; 高), also variously romanized Go, Goh, or Koh, is a common Korean surname.
Among Koreans with this surname, the largest clan is the Jeju Go clan, named for its bon-gwan (clan hometown) of Jeju Island; they claim descent from Go Eul-na, the first ruler of the kingdom of Tamna, which ruled Jeju until being absorbed by the Joseon dynasty.