Cognomen Olony-Nandzo (Olony-Nandzo 
) , in the entire world, is a rare family name. The cognomen Olony-Nandzo is characteristic of 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 first name Olony, and a last name Nandzo.
| VARIANT | COUNTRY |
|---|---|
| Olony-Nandzo | Democratic Republic of the Congo |