Cognomen Grios (Grios 
) , in the world, is a very rare last name. The surname Grios is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is a rare surname, Costa Rica, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Latin America and the Caribbean, particularly Nicaragua, Brazil, and Costa Rica. Very seldom, Grios is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grios | Philippines, Venezuela, Nicaragua, Brazil, Costa Rica |