Cognomen Эффа (Effa 
, Эффа 
) , across the world, is quite a common surname. The family name Эффа is characteristic of Sub-Saharan Africa, particularly Cameroon, where it is quite a common surname, Gabon, and Ghana, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Cameroon, Nigeria, and India. Likewise, Эффа is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Effa | Ethiopia, Malaysia, Nigeria, India, Cameroon |
| Эффа | Kazakhstan, Russia |