Throughout the world, มนต์เพชร (มนต์เพชร 
, Monpetch , Monphet 
) is an extremely rare girly first name. Likewise, มนต์เพชร is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| มนต์เพชร, Monpetch | Thailand |
| Monphet | Thailand, United States |
Monphetch, and Montonphetch