Cetinjanin families are Croats and they are mostly from Ogulin. In the past century, relatively most of Croatian residents bearing this family name were born in Ogulin and Otocac.
Prevalence
About 80 people with faimily name Cetinjanin live in Croatia today, in 40 households. There were 100 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 10 Croatian counties, in 12 cities and 7 other places, mostly in Ogulin (15), Zadar (10), Hrvatska Kostajnica (10), Zagreb (<10), and in Covici (<10).
Outside Croatia
Family name Cetinjanin is present in four countries on two continents.
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.