Globally, พรหมสิทธิ (พรหมสิทธิ 
, Phormsitthi, Phommasith 
) is an extremely rare unknown gender first name. Much more frequently, พรหมสิทธิ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| พรหมสิทธิ | Thailand |
| Phommasith | Laos, United States |