Cognomen Milton Gregorio (Milton Gregorio 
) , around the world, is an extremely rare surname. The surname Milton Gregorio is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more prevalently, Milton Gregorio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Milton Gregorio | Brazil, Chile, Peru, Ecuador |