Cognomen Nachaiya (Nachaiya 
) , worldwide, is a very rare last name. The last name Nachaiya is characteristic of Thailand, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Much less frequently, Nachaiya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nachaiya | India, Nigeria, United States, Thailand |