Cognomen Osah (Osah 
) , across the world, is quite a rare family name. The last name Osah is habitual in Ghana, where it is quite a rare surname, Nigeria, where it is a rare surname, and New Zealand. Not in comparison with a country's population, this name is the most popular in Ghana, Nigeria, and Egypt. Likewise, Osah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Osah | Egypt, Malaysia, Nigeria, Ghana, Indonesia |