Surname Kamnoi (Kamnoi 
) , in the world, is a rare last name. The cognomen Kamnoi is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Likewise, Kamnoi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kamnoi | Thailand, Myanmar, India, United States |