Family name โสมมนัส (โสมมนัส 
) , in all the world, is a very rare cognomen. The last name โสมมนัส is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, โสมมนัส is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| โสมมนัส | Thailand |