Family name Кариус (Carius 
, Karius 
, Karyus 
) , in all the world, is quite a rare last name. The family name Кариус is habitual in Germany, where it is quite a rare surname, Brazil, where it is a rare surname, and Australia. In absolute terms, it is commonest in Germany, Brazil, and the United States. Very seldom, Кариус is the forename as well as the last name.