The Diocese of Risano (Latin Risinium) was a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church from the 6th to the 17th century and is now a titular see.
It was established c. 500 as Diocese of Risano with its episcopal see at Risan, site of the ancient town of Rhizon.
It was a suffragan of the Archdiocese of Diocleia in the late Roman province of Dalmatia Superior.
It was suppressed c. 1630, its territory being merged into the Diocese of Kotor, also in modern Montenegro.
(incomplete in the 6th and possibly until the 13th century) The diocese was nominally restored in 1933 as Latin Titular bishopric of Risinium (Latin name; Curiate Italian Risinio) It has had the following incumbents, of the fitting (lowest) episcopal rank with two archiepiscopal exceptions: