20th Century
- Bishops in China who joined the Chinese Catholic Patriotic Association and ordained bishops without papal approval.
- John XXIII excommunicated Fidel Castro in 1962
- Archbishop Marcel Lefebvre, Bishops Antonio de Castro Meyer, Bernard Fellay, Bernard Tissier de Mallerais, Richard Williamson and Alfonso de Galarreta for the Ecône Consecrations without papal mandate. Formally declared to have incurred latae sententiae excommunication by Cardinal Bernardin Gantin on July 1, 1988. The excommunications of the latter four were lifted in 2009.
- Father Romolo Murri, a leader of the Italian Catholic Democrats, for giving speeches against Papal policy
- Juan Perón, in 1955, after he signed a decree ordering the expulsion of Argentine bishops Manuel Tato and Ramón Novoa
- All Catholics who participated in the creation of an independent church in the Philippines, in 1902
- Alfred Loisy, a French cleric associated with modernism.
- Leonard Feeney, a U.S. Jesuit priest who defended the strict interpretation of the Roman Catholic doctrine "outside the Church there is no salvation", arguing that baptism of blood and baptism of desire are unavailing. Feeney was later fully reconciled to the Church before his death.
- All Catholics who participated in the trial of Archbishop Aloysius Stepinac, which included most of the jury members.
- Feliksa Kozłowska and the Mariavite movement in December 1906 by St Pius X
- Plaquemines Parish President Leander Perez, Jackson G. Ricau (secretary of the Citizens Council of South Louisiana) and Mrs. B.J. Gaillot, Jr., president of Save Our Nation, Inc., on April 16, 1962 by Archbishop Joseph Rummel of the Archdiocese of New Orleans. They were excommunicated for aggressively opposing the racial integration of Catholic schools in the Archdiocese starting in the 1963-64 school year. Perez and Ricau were later reinstated into the Church following public retractions.
- John Duryea, popular priest at Stanford University and in Palo Alto, California, in 1976
Read more about this topic: List Of People Excommunicated By The Roman Catholic Church