Cognomen Krainit (Krainit 
) , worldwide, is a very rare family name. The family name Krainit is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Krainit is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Krainit | Thailand |
Praphat, Narumon, Saowaluk, Peerapat, and Suraswadee