Cognomen カリオ (Kario 
, カリオ 
, Kallio 
) , worldwide, is a common family name. The family name カリオ is characteristic of Finland, where it is a common surname, Malta, where it is quite a rare surname, and Estonia. Not in comparison with a country's population, it is the most numerous in Finland, Indonesia, and the United States. Much less frequently, カリオ is the forename as well as the last name.