Cognomen Chaisrijan (Chaisrijan 
) , in all the world, is a very rare family name. The cognomen Chaisrijan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Chaisrijan | Thailand |
Kraipet, Phithayarat, and Phatchareporn