Cognomen Rostik (Ростик 
, Rostik 
) , around the world, is a rare surname. The family name Rostik is habitual in Czechia, where it is a rare surname, Georgia, and Ukraine, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Eastern Europe, particularly Czechia, Russia, and Ukraine. Also, Rostik is the forename as well as the last name.