Family name Ploythawan (Ploythawan 
) , around the world, is an extremely rare surname. Much more prevalently, Ploythawan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ploythawan | Thailand |
Aunhaphattana, Seechompoo, Seechumpoo, Charoenying, and Komarathad