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Around the world, Kallio (カリオ , Kallio , Каллио ) is a very rare unisex given name. The first name Kallio is characteristic of Latin America and the Caribbean, particularly Brazil, where it is an extremely rare predominantly boy's, but very seldom girly name. Much more frequently, Kallio is the last name as well as the forename.
Kallio is also a name for the fictitious and mythical characters: Kallio , the theatrical character in the play "Crossroads".