The Diocese of Ischia (Latin: Dioecesis Isclana) is a Roman Catholic ecclesiastical territory in Campania, southern Italy. It is a suffragan of the Archdiocese of Naples. In 2013 in the diocese of Ischia there was one priest for every 1,628 Catholics.
The first Bishop of Ischia, Pietro, was appointed in 1179. He was present at the Third Lateran Council.
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Fra Bartolomeo Borsolari (1359), an Augustinian,;
Michele Cosal, O.Cist. (1453), a Spaniard;
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Bernardino de Leis, C.R.L. (1501–1504 Appointed, Bishop of Castro di Puglia)
Donato Strineo (1504–1534 Died)
Agostino Falivenia (Pastineus), O.S. (1534–1548 Died)
Francisco Gutiérrez (bishop) (1548–1554 Died)
Virgilio Rosario (1554–1559 Died)
Filippo Geri (1560–1564 Appointed, Bishop of Assisi)
Fabio Polverone (1565–1589 Died)
Iñigo de Avalos (1590–1635 Died)
Francesco Tontori (Tontolo), C.R.S. (1638–1663 Resigned)
Giovanni Antonio de' Vecchi (1663–1672 Died)
Gerolamo Rocca (1672–1691 Died)
Michelangelo Cotignola (1692–1698 Resigned).
Luca Trapani (1698–1718 Appointed, Bishop of Tricarico)
Gianmaria Capecelatro, C.R.L. (1718–1738 Died)
Nicola Antonio Schiaffinati, O.E.S.A. (1739–1743 Died)
Felice Amato (1743–1764 Died)
Onofrio de Rossi (1764–1775 Appointed, Bishop of Sant'Agata de' Goti)
Sebastiano de Rosa (1775–1792 Confirmed, Bishop of Avellino e Frigento)
Pasquale Sansone (1792–1799 Died)
Giuseppe d'Amante (1818–1843 Died)
Luigi Gagliardi (1845–1854 Resigned)
Felice Romano (1854–1872 Died)
Francesco di Nicola (1872–1885 Died)
Gennaro Portanova (1885–1888 Appointed, Archbishop of Reggio Calabria)
Giuseppe Candido (1888–1901 Resigned)
Mario Palladino (1901–1913 Appointed, Bishop of Caserta)
Pasquale Ragosta (1914–1925 Appointed, Bishop of Castellammare di Stabia)
Ernesto de Laurentiis (1928–1956 Died)
Antonio Cece (1956–1962 Appointed, Coadjutor Bishop of Aversa)
Dino Tomassini (1962–1970 Appointed, Bishop of Anglona-Tursi)
Diego Parodi, M.C.C.I. (1980–1983 Died)
Antonio Pagano (1983–1997 Retired)
Filippo Strofaldi (1997–2012 Resigned)
Pietro Lagnese (2013–)
