Last name Efran Gregorio (Efran Gregorio 
) , across the world, is an extremely rare surname. The last name Efran Gregorio is characteristic of Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Also, Efran Gregorio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Efran Gregorio | Chile |