In Croatia, Antunić families are predominantly Serbs, rarely Croats (from Porec ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Bosanian Posavina (Bosanski Samac area) and in Vukovar.
Prevalence
About 20 people with faimily name Antunić live in Croatia today, in 8 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties, threee cities and four other places, mostly in Vera in Vukovar area (10), Buje (<5), Trpinja in Vukovar area (<5), Vukovar (<5), and in Tar (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1678 in source Catholic Church Parish Records.