Last name Gregorio Eugenio (Gregorio Eugenio 
) , around the globe, is a very rare surname. The last name Gregorio Eugenio is habitual in Chile, where it is a very rare surname, and Spain, where it is an extremely rare surname. More prevalently, Gregorio Eugenio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gregorio Eugenio | Ecuador, Spain, Chile, Mexico, Peru |