Roman Catholic Diocese of Arbe

The Diocese of Arbe or Diocese of Rab or Diocese of Arba (Latin: Dioecesis Arbensis) was a Roman Catholic diocese located in the town of Arbe (modern day Rab) on the Croatian island of the same name located just off the Adriatic coast of northern Dalmatia, in Croatia, where still stands the former cathedral, dedicated to the Assumption of Mary.