Mujčinović families are mainly Bosniaks and they are mostly from east Herzegovina , whereas often Croats (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 East Herzegovina (Nevesinje area). In Trešnjeva Glava in Middle Bosnia nearly every inhabitant had the family name Mujčinović.
Prevalence
About 70 people with faimily name Mujčinović live in Croatia today, in 40 households. They are located in the most of Croatian counties, in 15 cities and 8 other places, mostly in Zagreb (30), Rijeka (<10), Dubrovnik (<10), Osijek (<10), and in Sarengrad (<10).
Outside Croatia
Family name Mujčinović is present in 16 countries on four continents. The family name "Mujcinovic " is used by some 200 people in Austria , about 100 in Afghanistan , and some 80 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.