Surname Onina-Ngoulou (Onina-Ngoulou 
) , around the world, is a rare cognomen. The cognomen Onina-Ngoulou is habitual in Sub-Saharan Africa, particularly the Democratic Republic of the Congo, where it is a rare surname. Parts of the name also exists independently as a last name Onina, and a last name Ngoulou.
| VARIANT | COUNTRY |
|---|---|
| Onina-Ngoulou | Democratic Republic of the Congo |