Family name Penjamras (Penjamras 
) , in all the world, is a very rare surname. The last name Penjamras is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Penjamras | Thailand |
Wanida, Apichit, Teerapat, Chawalwiwat, and Chalothorn