In the world, Anio (Anio 
, Aniene 
) is a rare epicene forename. The first name Anio is characteristic of Israel, where it is a rare male name, Italy, where it is a rare largely male, but seldom feminine name, and Nigeria, where it is a very rare gender-neutral name. Measured by absolute frequency, it most frequently occurs in Nigeria, Italy, and China. Also, Anio is the last name as well as the forename.