Cognomen เทพประสิทธิ์ (เทพประสิทธิ์ 
, Thepprasit 
, Theprasit ) , throughout the world, is quite a rare last name. The cognomen เทพประสิทธิ์ is habitual in Thailand, where it is quite a rare surname, Singapore, where it is a rare surname, and the United States, where it is an extremely rare surname. Also, เทพประสิทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Theprasit, Theepprasan, เทพประสิทธิ์ | Thailand |
| Thepprasit | Singapore, Canada, United States, Thailand |
Detpaoprasert, Dhepparath, Dhepprasit, Tepprasit, Teprasit, Tetpasit, Theepprasarn, Thekprasit, Thekprsit, Thepprasan, Thepprasane, Thepprasith, Thepprasitt, Theprasmee, Thetprasit, Thetprasith, Thuppraseat, Thupprasit, and Twapprasit