Surname Kumlan (Kumlan 
) , in the entire world, is a very rare family name. The last name Kumlan is habitual in South-eastern Asia, particularly Malaysia, where it is a very rare surname, Thailand, and Indonesia. Very seldom, Kumlan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kumlan | Indonesia, United States, Malaysia, Thailand, Philippines |