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