Kuljanac families are Croats and they are mostly from Banja Luka area (Bosnia). In the past century, relatively most of Croatian residents bearing this family name were born in Banja Luka Region, Bosnia (Banja Luka area) and in Rijeka.
Prevalence
About 140 people with faimily name Kuljanac live in Croatia today, in 50 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in 10 Croatian counties, in 13 cities and 25 other places, mostly in Zagreb (30), Ratkovac in Nova Gradiska area (25), Sisak (10), Petrinja (10), and in Plaski in Slunj area (<10).
Outside Croatia
Family name Kuljanac is present in four countries on three continents. The family name "Kuljanac " is used by small number of people in the United States.
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.