Family name Milton Efrain (Milton Efrain 
) , throughout the world, is an extremely rare last name. The cognomen Milton Efrain is characteristic of Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more prevalently, Milton Efrain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Milton Efrain | Spain, Chile, Honduras, Ecuador, Peru |