Cognomen Erwin Efren (Erwin Efren 
) , throughout the world, is an extremely rare surname. The last name Erwin Efren is characteristic of Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. More frequently, Erwin Efren is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Erwin Efren | Chile, Ecuador |