The Diocese of Dubrovnik ; or Ragusa is a Latin Church ecclesiastical territory or diocese of the Catholic Church in southern Croatia. The diocese is centred in the city of Dubrovnik. It was first erected in 990. From 1120 to 1828 it was elevated to the status of archdiocese. By papal bull Locum Beati Petri it was degraded to the level of a diocese in 1828.

Mato Vodopić was a Croatian prelate of the Catholic Church who served as bishop of Dubrovnik from 1882 until he died in 1893 and Apostolic Administrator of Trebinje Mrkan from 1882 until 1890. He wrote poems for some special occasions and was a storyteller and collector of folk ballads. He remains the only native to serve as the bishop of Dubrovnik since the abolishment of the Republic of Ragusa in 1808.