List of excommunicable offences in 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 This is a list, in chronological order, of present and past offences to which the Catholic Church has attached the penalty of excommunication; the list is not exhaustive.

However, in a few cases a bishop would need to name the person who violated the rule for them to be excommunicated.

Only offences from the 1983 Code of Canon Law still have legal effect in the church.

Since theological historians have doubts about the ecumenical character of council sessions, the session number and location of each ruling are included: The first unified code of canon law was produced in 1917, and it replaced all previous rules regarding excommunication which had come from councils and papal documents.

Therefore, only the 1983 code still has legal standing with regard to excommunicable offences.