Cognomen พระไพศาล (Phraisan 
, พระไพศาล , Phra Paisan ) , across the world, is a very rare family name. The cognomen พระไพศาล is characteristic of Thailand, where it is a very rare surname, and Germany, where it is an extremely rare surname. Also, พระไพศาล is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phraisan | Germany, Thailand |
| Praphaisan, Phra Paisan, พระไพศาล | Thailand |