Surname โกสุม (Kosum 
, โกสุม , Kosoom ) , across the world, is a rare family name. The surname โกสุม is characteristic of Thailand, where it is quite a rare surname, Malaysia, where it is a very rare surname, and Turkey. Measured by absolute frequency, it is commonest in Thailand, India, and Turkey. More frequently, โกสุม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kosum | Myanmar, Thailand, United States, India, Turkey |
| โกสุม | Thailand |
| Kosoom | United States, Thailand, India |
| Gosoom | Thailand, United States |