Surname Chaemchai (Chaemchai 
, แจ่มใจ) , in all the world, is a very rare cognomen. The last name Chaemchai is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Chaemchai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chaemchai | Thailand |