Cognomen เพ็ญสวาท (เพ็ญสวาท 
) , in the world, is an extremely rare family name. The cognomen เพ็ญสวาท is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, เพ็ญสวาท is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| เพ็ญสวาท | Thailand |