Last name Prayonghorm (Prayonghorm 
) , throughout the world, is an extremely rare family name. The cognomen Prayonghorm is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Also, Prayonghorm is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Prayonghorm | Thailand |