In Croatia, Antonov families are generally Croats (from Split ), very rarely Czechs (from Kastel Sucurac ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and Zagreb.
Prevalence
About 20 people with faimily name Antonov 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 threee Croatian counties, four cities and four other places, mostly in Zagreb (<10), Kastel Stari (<10), Split (<5), Okrug Gornji on the Island of Ciovo (<5), and in Donja Zelina (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.