Family name ສມສະນດ (ສມສະນດ 
) , worldwide, is a rare cognomen. The last name ສມສະນດ is characteristic of South-eastern Asia, particularly Laos, where it is quite a common surname. Also, ສມສະນດ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ສມສະນດ | Laos |