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