Cognomen Prapajaraswong (Prapajaraswong 
) , worldwide, is an extremely rare family name. The surname Prapajaraswong is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, Prapajaraswong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Prapajaraswong | China, Thailand |