Cognomen Kritboonyapat (Kritboonyapat 
) , around the world, is a very rare family name. The last name Kritboonyapat is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kritboonyapat | Thailand |
Kichita, Tanakrit, Kritchasorn, and Phattharaya