Cognomen ສມຈດ (ສມຈດ 
) , throughout the world, is a rare surname. The last name ສມຈດ is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname. Predominantly, ສມຈດ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ສມຈດ | Laos |