Cognomen Ploynapus (Ploynapus 
) , across the world, is an extremely rare last name. Much more prevalently, Ploynapus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ploynapus | Thailand |
Tesgean, Sichunhawanich, Khuntree, Wongprapan, and Thumthanasiri