Cognomen Kaslun (Kaslun 
) , globally, is a very rare last name. The last name Kaslun is habitual in South-eastern Asia, particularly Malaysia, where it is a very rare surname, and Philippines, where it is an extremely rare surname. Very seldom, Kaslun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kaslun | Malaysia, Philippines |