Throughout the world, ภัทรประสิทธิ์ (ภัทรประสิทธิ์ 
, Pattrapasit , Phatraprasit 
) is an extremely rare unknown gender forename. Much more prevalently, ภัทรประสิทธิ์ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Phatprasit, ภัทรประสิทธิ์, Pattrapasit | Thailand |
| Phatraprasit | United States, Thailand |
Patprasitta, Patprasittha, Pattarapasit, Pattaraprasit, Pattraprasit, Phataraprasit, Phattharaprasit, and Phattraprasit