Surname Ponkasem (Ponkasem 
, ปอนเกษม ) , in all the world, is a very rare family name. The surname Ponkasem is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Ponkasem is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ponkasem, ปอนเกษม | Thailand |