Surname Kasemsongtham (Kasemsongtham 
) , in all the world, is a very rare family name. The surname Kasemsongtham is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Kasemsongtham is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kasemsongtham | Thailand |
Chatsaran, Natchalai, and Kriengkrai