The Diocese of Crete (Latin: Dioecesis Candiensis) is a Latin Church diocese of the Catholic Church located on the island of Crete in the ecclesiastical province of Naxos, Andros, Tinos and Mykonos in Greece.

Roman Catholic presence on the island of Crete dates to its conquest by the Republic of Venice in the years after the Fourth Crusade (1204), and its establishment as a Venetian colony in 1212.

Immediately after that, the first Latin Rite Archbishop of Crete was appointed, with a succession of holders until the Ottoman conquest of the island in the Cretan War (1645–1669).

Thereafter the see remained vacant, until re-established as a simple bishopric on 28 August 1874, initially a suffragan of the Roman Catholic Archdiocese of İzmir, but today a suffragan of the Roman Catholic Archdiocese of Naxos, Andros, Tinos and Mykonos.

Present day Catholic Churches in Heraklion (Saint John The Baptist), Chania, Rethymnon (St. Antony of Padua) See vacant from 1669.