Surname Klonsom (Klonsom 
) , all over the world, is a very rare family name. The family name Klonsom is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Klonsom | Thailand |
| kittituch klonsom (b. 1994) |
|
Somsak, Yuthakit, Ratchanee, Channarong, and Phattaraporn