Worldwide, Corneus (Corni 
, Corneo 
, Corneus 
) is a very rare unisex first name. The given name Corneus is characteristic of Romania, where it is a rare masculine name, Italy, where it is a very rare girly name, and South Africa, where it is a very rare gender-neutral name. More prevalently, Corneus is the last name as well as the forename.