Family name Cilka (Cilka 
, クリカ) , worldwide, is a very rare last name. The last name Cilka is characteristic of Slovenia, where it is a rare surname, Czechia, and Georgia, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Czechia, Brazil, and Slovenia. Also, Cilka is the forename as well as the last name.