Cognomen Petcharatn (Petcharatn 
) , in all the world, is an extremely rare last name. The cognomen Petcharatn is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Very seldom, Petcharatn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Petcharatn | United States, Thailand |
Pimchit, and Chanantawat