Cognomen Njinoyi (Njinoyi 
) , across the world, is a very rare last name. The last name Njinoyi is habitual in Sub-Saharan Africa, particularly South Africa, where it is a very rare surname. Very seldom, Njinoyi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Njinoyi | South Africa |