Cognomen สมสนิท (สมสนิท 
, Somsanit 
, Somsnit ) , globally, is a rare family name. The cognomen สมสนิท is characteristic of Laos, where it is quite a rare surname, Thailand, where it is a rare surname, and Australia, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in Thailand, Laos, and the United States. Also, สมสนิท is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมสนิท | Thailand |
| Somsanit | United States, Australia, Laos, Thailand |
| Somsnit | United States, Thailand |