Antonini families are mainly Croats and they are mostly from Makarska , less frequently Italians (from Buje ). In the past century, relatively most of Croatian residents bearing this family name were born in Split and Makarska.
Prevalence
About 60 people with faimily name Antonini live in Croatia today, in 30 households. There were 90 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 6 Croatian counties, in 8 cities and two other places, mostly in Split (20), Buje (15), Metkovic (15), Rijeka (10), and in Makarska (10).
Outside Croatia
At least six families with this surname emigrated from Croatia to the United States. Family name Antonini is present in 47 countries worldwide.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.