Cognomen Contreras Mamani (Contreras Mamani 
) , throughout the world, is a very rare surname. The surname Contreras Mamani is habitual in Bolivia, where it is a rare surname, Chile, where it is a very rare surname, and Spain.
| VARIANT | COUNTRY |
|---|---|
| Contreras Mamani | Spain, Chile, Bolivia, Peru |
Joaquin, and Edwin Efrain