Family name สุรธีร์ (สุรธีร์ 
) , globally, is an extremely rare surname. The surname สุรธีร์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, สุรธีร์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สุรธีร์ | Thailand |