The Diocese of Dubrovnik (Croatian: Dubrovačka biskupija); or Ragusa (Latin: Dioecesis Ragusiensis) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in southern Croatia.

[1][2] The diocese is centred in the city of Dubrovnik.

By papal bull Locum Beati Petri it was degraded to the level of a diocese in 1828.

Current bishop Roko Glasnović is head of the diocese.

Dubrovnik's patron saint is Saint Blaise (locally called Sveti Vlaho).