Cognomen Muanprayoon (Muanprayoon 
) , all over the world, is a very rare last name. The family name Muanprayoon is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Muanprayoon | Thailand |
Wasna, Charoen, Waraporn, and Napasaporn