Surname สมดิษฐ์ (สมดิษฐ์ 
) , all over the world, is an extremely rare cognomen. The last name สมดิษฐ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, สมดิษฐ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมดิษฐ์ | Thailand |