Last name Kumsong (Kumsong 
) , globally, is a very rare family name. The family name Kumsong is characteristic of Thailand, where it is a rare surname, and China, where it is an extremely rare surname. Also, Kumsong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kumsong | China, Thailand, United States, India, Myanmar |