Cognomen Oruma (Oruma 
) , in the entire world, is quite a rare surname. The surname Oruma is characteristic of Sub-Saharan Africa, particularly Kenya, where it is quite a rare surname, Nigeria, where it is a rare surname, and Ethiopia, where it is a very rare surname. Likewise, Oruma is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oruma | Kenya, Ethiopia, United States, Thailand, Nigeria |