Last name Kasmoen (Kasmoen 
) , in all the world, is a very rare cognomen. The surname Kasmoen is characteristic of South-eastern Asia, particularly Indonesia, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Also, Kasmoen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kasmoen | Malaysia, Indonesia |