Cognomen สมโภชณ์ (สมโภชณ์ 
) , around the world, is an extremely rare family name. The cognomen สมโภชณ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, สมโภชณ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมโภชณ์ | Thailand |