Surname Nelson Efren (Nelson Efren 
) , across the world, is an extremely rare family name. The cognomen Nelson Efren is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more prevalently, Nelson Efren is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nelson Efren | Costa Rica, Spain, Chile, Ecuador, Peru |
Lopez Perez, Merino Garrido, Quezada Hidalgo, and Jimenez Sarango