Family name Ilumu (Ilumu 
) , around the world, is a rare last name. The family name Ilumu is characteristic of Sub-Saharan Africa, particularly the Democratic Republic of the Congo, where it is a rare surname, and Nigeria, where it is an extremely rare surname. Much less frequently, Ilumu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ilumu | Nigeria, Democratic Republic of the Congo |