Cognomen Pongjan (Pongjan 
) , in all the world, is a very rare surname. The cognomen Pongjan is characteristic of Thailand, where it is a rare surname, and Canada, where it is an extremely rare surname. Likewise, Pongjan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pongjan | Thailand, India, Canada |