Family name Pechsimuen (Pechsimuen 
) , all over the world, is a very rare last name. The last name Pechsimuen is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Pechsimuen | Thailand |
Sofia, Poonsak, Poonsuk, and Pechcharat