List of excommunicated cardinals

Only a few dozen cardinals of the Roman Catholic Church have been excommunicated. A cardinal is a Roman Catholic priest, deacon, or bishop entitled to vote in a papal election, collectively known as the College of Cardinals. Excommunication—literally, the denial of communion—means that a person is barred from participating in the Sacraments or holding ecclesiastical office. Ne Romani (1311), promulgated by Pope Clement V during the Council of Vienne, extended suffrage in papal election to excommunicated cardinals in an attempt to limit schisms.Miranda, S. 1998. "Guide to documents and events". Florida International University.
This list includes only cardinals who have been explicitly excommunicated by a pope or ecumenical council, rather than those who (depending on one's interpretation) may have been excommunicated latae sententiae. For example, several precepts of papal election law proscribed automatic excommunication, such as Licet de vitanda of the Lateran Council which prohibited election by one-third, and Pope Pius X's Commisum nobis, which made the exercise of the jus exclusivae by any cardinal punishable by excommunication.Miranda, S. 1998. "Guide to documents and events". Florida International University.Miranda, S. 1998. "Guide to documents and events". Florida International University. It also does not include excommunicated quasi-cardinals (cardinals elevated by antipopes) or clerics excommunicated before receiving the red hat.
Many excommunicated cardinals reconciled (most often with the successor of their excommunicator) and had their offices restored. Some would later be elected pope; for example, Formosus and Sergius III.
==9th century==
Cardinal 	Elevating pope	Date of elevation	Excommunicating pope or council 	Date of excommunication 	Reason 	Notes
Rodoaldo, bishop of Porto 	Leo IV 	853 	Nicholas I 	864 	Simony 	Miranda, S. 1998. "IX Century (795-900)". Florida International University.
Anastasio il Bibliotecario	Leo IV 	847 	Council of RomeCouncil of RavennaCouncil of Rome	December 6, 860May 29, 853December 8, 853	Intrigue against the pope	Reconciled with Nicholas I and Adrian II
Formoso 	Nicholas I 	861 	John VIII 	867 	Various charges 	Reconciled with Marinus I; future Pope Formosus; re-excommunicated posthumously by the Cadaver Synod
Sergio 	Stephen V 	ante 897 	John IX/Roman Synod 	April 898 	Role in the Cadaver Synod	Later reconciled; future Pope Sergius III
Benedetto 	Formosus 	ante 896 	John IX/Roman Synod 	April 898 	Role in the Cadaver Synod	
Martino 	Formosus 	ante 896 	John IX/Roman Synod 	April 898 	Role in the Cadaver Synod	
Giovanni 	Formosus 	ante 896 	John IX/Roman Synod 	April 898 	Role in the Cadaver Synod	
Pasquale 	Formosus 	ante 896 	John IX/Roman Synod 	April 898 	Role in the Cadaver Synod	
Giovanni 	Formosus 	ante 896 	John IX/Roman Synod 	April 898 	Role in the Cadaver Synod	
Leone 	Formosus 	ante 896 	John IX/Roman Synod 	April 898 	Role in the Cadaver Synod	
==11th century==
Cardinal 	Elevating pope	Date of elevation	Excommunicating pope or council 	Date of excommunication	Reason 	Notes
Hugh of Remiremont	Leo IX 	1049 	Gregory VII/Roman synod of Letran	March 3, 1078 	Simony 	Joined Antipope Clement IIIMiranda, S. 1998. "XI Century (999-1099)". Florida International University.
Richard Milhau 	Gregory VII 	Ante May 7, 1078 	Victor III/Council of Benevento 	August 1087 	Joined allegiance of Antipope Clement III	Miranda, S. 1998. "Consistory of 1078 (V)". Florida International University.
==12th century==
Cardinal 	Elevating pope	Date of elevation	Excommunicating pope or council	Date of excommunication	Reason 	Notes
Pietro Pierleoni 	Paschal II 	1106 or ca.1112 	Innocent II/Council of Reims 	October 18, 1131 	Election as Antipope Anacletus II	Miranda, S. 1998. "XII Century (1099-1198)". Florida International University.
Ottaviano de' Monticelli	Innocent II 	1138 	Alexander III 	1162 and 1163 	Election as Antipope Victor IV 	
==15th century==
Cardinal 	Elevating pope	Date of elevation	Excommunicating pope or council	Date of excommunication	Reason 	Notes
Louis Aleman	Eugene IV 	 	Eugene IV 	December 11, 1440 	Role in the Council of Basle	Reconciled with Nicholas VMiranda, S. 1998. "Consistory of December 19, 1449 (IV)". Florida International University.
==16th century==
Cardinal 	Elevating pope	Date of elevation 	Excommunicating pope or council	Date of excommunication	Reason 	Notes
Francisco de Borja 	Alexander VI 	September 28, 1500	Julius II 	October 24, 1511 	Role in the Council of Pisa	Cardinal-nephew; Died before his concillar colleagues reconciledMiranda, S. 1998. "Consistory of September 28, 1500 (IX)". Florida International University.
Federico di Sanseverino 	Innocent VIII 	March 9, 1489 	Julius II 	October 24, 1511 	Role in the Council of Pisa	Reconciled with Leo XMiranda, S. 1998. "Conclaves of the XVI Century (1503-1592)". Florida International University.
Bernardino López de Carvajal	Alexander VI 	September 20, 1493	Julius II 	October 24, 1511 	Role in the Council of Pisa	Reconciled with Leo XMiranda, S. 1998. "Conclaves of the XVI Century (1503-1592)". Florida International University.
Guillaume Briçonnet 	Alexander VI 	January 16, 1495 	Julius II 	October 24, 1511 	Role in the Council of Pisa	Reconciled with Leo XMiranda, S. 1998. "Conclaves of the XVI Century (1503-1592)". Florida International University.
René de Prie 	Julius II 	December 18, 1506 	Julius II 	October 24, 1511 	Role in the Council of Pisa	Reconciled with Leo XMiranda, S. 1998. "Conclaves of the XVI Century (1503-1592)". Florida International University.
==18th century==
Cardinal 	Elevating pope	Date of elevation	Excommunicating pope or council	Date of excommunication	Reason	Notes
Niccolò Coscia	Benedict XIII 	June 11, 1725 	Clement XII 	May 9, 1733 	 	Reconciled with Clement XIIMiranda, S. 1998. "XVIII Century (1700-1799)". Florida International University.
==References==
 
Excommunicated