Surname Khamapai (Khamapai 
) , throughout the world, is a very rare last name. The family name Khamapai is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Khamapai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khamapai | India, Thailand |