Komšo families are Croats and they are mostly from middle Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Kakanj area) and in Pula.
Prevalence
About 170 people with faimily name Komšo live in Croatia today, in 70 households. They are located in the most of Croatian counties, in 20 cities and 35 other places, mostly in Gracac in Knin area (15), Ivanic-Grad (<10), Pula (<10), Knin (<10), and in Kutovi in Orahovica area (<10).
Outside Croatia
Family name Komšo (including: Komso , Chomsoh ) is present in 10 countries on four continents. The family name "Komso " is used by small number of people in the Netherlands , small number in the United States , and small number of people in Germany.
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.