Last name Kajaiya (Kajaiya 
) , all around the world, is a very rare cognomen. The family name Kajaiya is habitual in Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. Very seldom, Kajaiya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kajaiya | India, Thailand |