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