Family name สมประดิษฐ์ (สมประดิษฐ์ 
, Sompradit 
, Sompradith 
) , around the world, is a rare last name. The family name สมประดิษฐ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, and Cambodia, where it is a very rare surname. Much less frequently, สมประดิษฐ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมประดิษฐ์ | Thailand |
| Sompradit | Cambodia, Thailand |
| Sompradith | France, United States, Thailand |