The Patriarchy of Aquileia goes back to the earliest times, initially as an archbishopric.

With the invasion of the Lombards in 568, the patriarch Paulinus fled to the island of Grado in the nearby lagoon, which he called New Aquileia.

However, in 606, the Lombards appointed another patriarch in Aquileia, leading to a schism which wasn’t resolved for centuries.

There were consequently two patriarchs contesting the same territory and the same believers, which at times even led to war.

In particular, a war in 1172 between the two patriarch caused the Patriarch of Grado to move to Venice. In 1451, the title was changed to Patriarch of Venice.

Patriarchs of Aquileia in Grado

• Paulinus I (557–569)
• Probinus (569–570)
• Elias (571–586)
• Severus (586–606)

Patriarchs of Grado

• Candidianus (606–612)
• Epiphanius (612–613)
• Cyprianus (613–627)
• Fortunatus I (627–628)
• Primogenius (630–647)
• Maximus II (649–?)
• Stephanus II (670–672)
• Agatho (?–679)
• Christophorus (682–717)
• Donato (717–726)
• Antonino (727–732)
• Emiliano (749–757)
• Vitelliano (757–766)
• Giovanni I (766–802)
• Fortunatus II (802–825)
• Venerio Trasmondo (825–844)
• Vittore I Berentano (844–852)
• Elia (853–856)
• Vitale I Partecipazio (856–874)
• Pietro I Marturio (874–878)
• Vittore II Partecipazio (878–896)
• Giorgio Partecipazio (896–897)
• Vitale II Partecipazio (897–900)
• Domenico I Tribuno (900–908)
• Lorenzo I Mastalici (908–921)
• Marino Contarini (921–955)
• Buono Blancanico (955–963)
• Vitale III Barbolano (963–967)
• Vitale IV Candiano (967–1018)
• Orso I Orseolo (1018–1045)
• Domenico Il Belcano (1045)
• Domenico III Marengo (1045–1069)
• Domenico IV Cerboni (1073–1084)
• Giovanni Il Saponario (1084–1091)
• Pietro II Badoer (1091–1104)
• Giovanni III Gradenigo (1105–1130)

Patriarchs of Grado in Venice

• Enrico Dandolo (1131–1186)
• Arnoldo (1186–1190)
• Giovanni IV Signole (1190–1201)
• Benedetto Falier (1201–1207)
• Angelo I Barozzi (1207–1238)
• Leonardo I Querini (1238–1250)
• Lorenzo Il (1251–1254)
• Jacopo Bellegno (1254)
• Angelo II Maltraverso (1255–1271)
• Giovanni V da Ancona (1271–1273)
• Guido (1279–1280)
• Francesco I Gerardi (1284–1289)
• Lorenzo II (1289–1294)
• Egidio (1295–1310)
• Angelo III (1310)
• Paolo Gualducci de Pilastri (1313–1316)
• Marco I Della Vigna (1316–1317)
• Domenico V (1318–1332)
• Dino di Radicofani (1332–1336)
• Andrea Dotto (1337–1351)
• Fortuniero Vaselli (1351–1361)
• Orso II Dolfin (1361–1367)
• Francesco Il Querini (1367–1372)
• Tommaso da Frignano (1372–1381)
• Urbano di Perugia (1383–1385)
• Pietro II Amely (1386–1400)
• Giovanni VI Benedetti (1400)
• Pietro IV Cocco (1400–1406)
• Giovanni VII Zambotto (1406–1407)
• Francesco III Lando (1407–1408)
• Giovanni VIII Dolfin (1408–1427)
• Biagio Molin (1427–1434)
• Marco II Condulmer (1434–1445)
• Domenico VI Michiel (1445–1451)

Patriarchs of Venice

• Lorenzo Giustiniani (1451–1456)
• Maffeo Contarini (1456–1460)
• Andrea Bondimaro (1460–1464)
• Gregorio Correr (1464)
• Giovanni Barozzi (1465–1466)
• Maffeo II Girardi (1466–1492)
• Tommaso Donài (1492–1504)
• Antonio Surian (1504–1508)
• Alvise Contarini (1508)
• Antonio II Contarini (1508–1524)
• Gerolamo Querini (1524–1554)
• Pier Francesco Contarini (1554–1555)
• Vincenzo Diedo (1556–1560)
• Giovanni II Trevisan (1560–1591)
• Lorenzo II Priuli (1591–1600)
• Matteo Zane (1600–1605)
• Francesco Vendramin (1605–1619)
• Giovanni III Tiepolo (1619–1630)
• Federico Corner (1630–1644)
• Gian Francesco Morosini (1644–1678)
• Alvise II Sagredo (1678–1688)
• Gian Alberto Badoer (1688–1706)
• Pietro Barbarigo (1706–1725)
• Marco Gradenigo (1725–1734)
• Francesco Antonio Correr (1734–1741)
• Alvise III Foscari (1741–1758)
• Giovanni IV Bragadin (1758–1776)
• Federico Maria Giovanelli (1776–1800)
• Lodovico Flangini (1801–1804)
• Nicola Saverio Gamboni (1807–1808)
• Stefano Bonsignori (1811–1815)
• Francesco Milesi (1815–1819)
• Giovanni Ladislao Pyrker (1820–1826)
• Jacopo Monico (1826–1851)
• Pietro Aurelio Mutti (1852–1857)
• Angelo F. Ramazzotti (1858–1861)
• Luigi Trevisanato (1862–1877)
• Domenico Agostini (1877–1891)
• Giuseppe Sarto (1893–1903)
• Aristide Cavallari (1904–1914)
• Pietro La Fontaine (1915–1935)
• Adeodato G. Piazza (1936–1948)
• Carlo Agostini (1949–1952)
• Angelo G. Roncalli (1953–1958)
• Giovanni Urbani (1959–1969)
• Albino Luciani (1970–1978)
• Marco Cè (1978–2002)
• Angelo Scola (2002–2011)
• Francesco Moraglia (2012-in office)