Cognomen Mrumbi (Mrumbi 
) , in all the world, is a rare surname. The surname Mrumbi is characteristic of Sub-Saharan Africa, particularly Tanzania, where it is a rare surname, and South Africa, where it is an extremely rare surname. Much less frequently, Mrumbi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mrumbi | South Africa, Tanzania |