Around the world, Phiwthongngam (Phiwthongngam 
) is an extremely rare unknown gender forename. Much more frequently, Phiwthongngam is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Phiwthongngam | Thailand |
Jhet, Adisak, Yuwaphun, and Kiatphiphat