Throughout the world, Phoophiengchai (Phoophiengchai 
) is an extremely rare unknown gender first name. Much more frequently, Phoophiengchai is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Phoophiengchai | Thailand |
Suphis, Chirawat, and Phra Chirawat