Cognomen Nyang'Oso (Nyang'Oso 
) , in the world, is a very rare last name. The surname Nyang'Oso is habitual in Sub-Saharan Africa, particularly Tanzania, where it is a very rare surname. More prevalently, Nyang'Oso is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nyang'Oso | Tanzania |