Surname Kuslan (Kuslan 
) , throughout the world, is a rare cognomen. The surname Kuslan is habitual in Slovenia, where it is quite a rare surname, Malaysia, where it is a rare surname, and Indonesia. Also, Kuslan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kuslan | Malaysia, Indonesia, United States, Slovenia, Germany |