Family name Kumbua (Kumbua 
) , around the globe, is a very rare surname. The family name Kumbua is habitual in Thailand, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Much less frequently, Kumbua is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kumbua | Thailand, Nigeria |