List of cardinals excommunicated by the Catholic Church

Jus novum (c. 1140-1563) Jus novissimum (c. 1563-1918) Jus codicis (1918-present) Other Sacraments Sacramentals Sacred places Sacred times Supra-diocesan/eparchal structures Particular churches Juridic persons Philosophy, theology, and fundamental theory of Catholic canon law Clerics Office Juridic and physical persons Associations of the faithful Pars dynamica (trial procedure) Canonization Election of the Roman Pontiff Academic degrees Journals and Professional Societies Faculties of canon law Canonists Institute of consecrated life Society of apostolic life Only a few dozen cardinals of the Roman Catholic Church have been excommunicated by the Catholic Church.

A cardinal is a Roman Catholic priest, deacon, or bishop entitled to vote in a papal election.

Excommunication—literally, the denial of communion—usually 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.

For example, several precepts of papal election law prescribed automatic excommunication, such as Licet de vitanda of the Lateran Council which prohibited election by one-third, and Pope Pius X's Commissum Nobis, which made the exercise of the jus exclusivae by any cardinal punishable by excommunication.

Pope Formosus , who was posthumously exhumed and tried in the Cadaver Synod , had previously been excommunicated by his predecessor as pope; all the participants in the Cadaver Synod themselves were later excommunicated
Francisco de Borja died before learning of his excommunication.
Pope Julius II excommunicated all cardinals who participated in the Council of Pisa (1511).