Last name Енніо (Ennio 
, Енніо 
, Aenius 
) , in all the world, is quite a rare surname. The family name Енніо is characteristic of Cyprus, where it is quite a rare surname, Venezuela, and Italy, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Venezuela, Italy, and Mexico. Much more frequently, Енніо is the forename as well as the last name.