Cognomen Κάρος (Carus 
, Κάρος) , all over the world, is quite a rare surname. The surname Κάρος is habitual in Turkey, where it is quite a rare surname, Argentina, where it is a rare surname, and Germany. Measured by absolute frequency, the name is most common in Turkey, Argentina, and Brazil. Very seldom, Κάρος is the forename as well as the last name.