This is a list of bishops and patriarchs of Aquileia in northeastern Italy. For the ecclesiastical history of the diocese, see Patriarchate of Aquileia.
From 553 until 698 the archbishops renounced Papal authority as part of the Schism of the Three Chapters and when they returned to the Roman fold they maintained the title patriarch which was adopted during this schism.
The Patriarchs gained the Countship of Friuli and the March of Carniola in 1077 and the March of Istria in 1209. The temporal authority of the patriarchate was lost on 7 July 1420 when its territories were secularized by Venice.
^Eduard Traversa, "Ottobono de' Razzi ( 1302-1315). Ein weiterer Beitrag zur Geschichte des Patriachates von Aquileja." (in German and Latin). In: Jahresbericht über das k. k. Staatsgymnasium im VIII. Bezirke Wiens, Vol. 61 (1911); Vol. 62 (Wien 1912); Vol. 63 (Wien: E. Kainz vorm. J. B. Wallishausser 1913), pp. 57-87.