Family name Phra Suradet (Phra Suradet 
) , across the world, is an extremely rare last name. Much more frequently, Phra Suradet is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phra Suradet | Thailand |
Saiphaeyueang, Sawatdee, and Sudchaliew