Cognomen Jaengjaikul (Jaengjaikul 
) , across the world, is a very rare family name. The last name Jaengjaikul is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Jaengjaikul is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jaengjaikul | Thailand |