Family name Kalkis (Kalkis 
, Калькис 
) , in the world, is a rare last name. The family name Kalkis is characteristic of Northern Europe, particularly Latvia, where it is quite a rare surname, Lithuania, and Estonia, where it is a rare surname. Measured by absolute frequency, the name is most common in Latvia, Russia, and Lithuania. Very seldom, Kalkis is the forename as well as the last name.