Surname Prapainop (Prapainop 
) , in all the world, is an extremely rare family name. The cognomen Prapainop is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Prapainop | Thailand |
| kanlaya prapainop researcher (ORCID 0000-0001-6417-4921) |
|