Family name เธนศ (Thanet 
, เธนศ ) , in the world, is quite a rare surname. The surname เธนศ is habitual in Nepal, where it is quite a rare surname, Qatar, and United Arab Emirates, where it is a rare surname. Measured by absolute frequency, it is commonest in Nepal, Saudi Arabia, and United Arab Emirates. More prevalently, เธนศ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thanet | United Arab Emirates, Laos, Saudi Arabia, Thailand, Nepal |
| เธนศ | Thailand |