Cognomen คมน (Gamana 
, Khamon 
, คมน ) , in all the world, is quite a rare family name. The cognomen คมน is characteristic of Philippines, where it is quite a rare surname, Thailand, where it is a rare surname, and the Democratic Republic of the Congo. Also, คมน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gamana | Romania, South Africa, Philippines, India, Democratic Republic of the Congo |
| Khamon | United Kingdom, United States, Thailand, India, Pakistan |
| คมน | Thailand |
| Komsn | Israel |