Family name Kasnun (Kasnun 
) , all around the world, is a very rare last name. The family name Kasnun is habitual in South-eastern Asia, particularly Malaysia, where it is a rare surname, and Indonesia, where it is a very rare surname. Very seldom, Kasnun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kasnun | Malaysia, Indonesia, Nigeria |