In Croatia, Unuk families are Croats (from Rijeka ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka.
Prevalence
About 10 people with faimily name Unuk live in Croatia today, in five households only. They are located in only threee naselja i to in Rijeka (<10), Ratulje in Rijeka area (<5), and in Karlovac (<5).
Outside Croatia
Family name Unuk (including: Unuchek , Unuch , Unuchko and Unnuk ) is present in 17 countries on three continents.