The Diocese of San Leone (Latin: Dioecesis Sancti Leonis) was a Roman Catholic diocese located in the Italian town of San Leone in Calabria. In 1547, it was suppressed to the Archdiocese of Trani. It was restored as a titular see in 1966.
1322: Established as Diocese of San Leone
1571 November 27: Suppressed to the Archdiocese of Santa Severina
1968: Restored as the Titular Episcopal See of San Leone
Erected: 1322
Latin Name: Sancti Leonis
Metropolitan: Archdiocese of Santa Severina
Guberto de Nichesola (22 Apr 1439 Appointed - )
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Giuliano Dati (26 Feb 1518 - 1524 Died)
Francesco Sperelli (19 Jan 1524 - 19 Jan 1526 Resigned)
Anselmo Sperelli, O.F.M. (19 Jan 1526 - 1531 Resigned)
Avanzio Cricche (18 Jan 1531 - 1535 Died)
Ottaviano de Castello (8 Jan 1535 - 1542 Died)
Tommaso Caselli, O.P. (11 Dec 1542 - 27 Oct 1544 Appointed, Bishop of Bertinoro)
Marco Salvidi (14 Nov 1544 - 1555 Died)
Giulio Pavesi, O.P. (23 Aug 1555 - 2 Oct 1555 Appointed, Bishop of Vieste)
Giulio Rossi (23 Oct 1555 - Mar 1564 Died)
Alvaro Magelanes (15 May 1565 - 27 Nov 1571 Died)
27 November 1571: Suppressed to the Archdiocese of Santa Severina
