Sedevacantist Roman Catholic Priests:

• Franciscan Friars of Rochester, New York. (Bishop Louis Vezelis, OFM; Archbishop Ngo Dinh Thuc)
• Religious Congregation of Mary Immaculate Queen. (Bishop Mark Pivarunas, CMRI, Archbishop Ngo Dinh Thuc)
• The Society of Traditional Roman Catholics (Rev. Kevin Vaillancort; Archbishop Ngo Dinh Thuc)
• Little Company of the Immaculate Heart of Mary. (Bishop Daniel Dolan, Archbishop Ngo Dinh Thuc)
• Sacerdotal Society of Christ the KIng. (Mt Rev. Thom Sebastian, SSCR; Bishop Carlos Costa)
• Istituto Mater Boni Consilii. (Rev. )
• Orthodox Roman Catholic Movement. (Bishop Robert McKenna, OP; Archbishop Ngo Dinh Thuc)
• Fortes In Fide. (Rev. Noel Barbara)
• Sanctuary. (Fr. Francis Egregyi).

Traditional Roman Catholic Priests:

• In Obedience to Pope John Paul II:
  • Opus Mariae Mediatricis. (Rev. William Ashley)
  • Sacerdotal Fraternity of St. Peter. (Rev. Philippe Devillers, SSSP, Rev. Josef Biesig, SSSP, Rev. Philippe Touryol du Clos, SSSP)
  • Sacerdotal Society of St. John Mary Baptist Vianney. (Bishop Licinio Rangel; Bishop Antonio de Castro Mayer)
  • Sacerdotal Society of St. John. (Rev. Carlos Urrutigoity, SSSJ)
  • Carmelite Recollects of the Sacred Heart. ()
  • Institute of Christ the King Sovereign Priest. (Msgr. Gilles Wach)
  • Canons Regular of St. John Cantius. (Rev. Francis Phillips)
  • Canons Regular of the Mother of God. (Rev. Wladimir-Marie de Saint-John)
  • The Slaves of the Immaculate Heart of Mary,
    St. Benedict Center, Still River, Massachusetts. (Bro. Thomas Augustine, MICM; Rev. Leonard Feeney, SJ, later MICM)
  • Order of St. Benedict, Congregation of Solesmes,
    Abbaye de Notre Dame, Fontgombault, France.
  • Order of St. Benedict, not (yet) in a congregation,
    Abbaye Sainte-Madeleine, Le Barroux, France. (Dom Gerard Calvet, OSB)
  • The Traditional Order of the Dominicans of St. Vincent Ferrer. (Rev. Louis Marie de Blignieres)
  • Order of Saint Dominic. ()
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• Not in Obedience to Pope John Paul II:
  • Known Origin of Priestly Orders:
    • Catholic Traditionalist Movement. (Rev. Gommar A. DePauw)
    • Traditional Catholics of America. (Rev. Francis Fenton)
    • League of the Catholic Counter-Reformation. (The Abbé Georges de Nantes)
    • The Slaves of the Immaculate Heart of Mary.
      St. Benedict Center, Richmond, New Hampshire. (Bro. Francis, MICM; Rev. Leonard Feeney, SJ, later MCIM)
    • Sacerdotal Society of St. Pius X. (Bishop Bernard Fellay; Archbishop Marcel Lefebvre)
    • Sacerdotal Society of St. Pius V. (Bishop Clarence Kelly, Bishop Alfred Mendes)
    • Congregation of the Most Holy Redeemer. (Rev. Michael Mary Sim, CSSR)
    • Order of Preachers at Avrillé. (Rev. Pierre Marie, OP)
    • Order of Saint John. (Rev. James Wathen, OSJ)
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  • Disputed Origin of Priestly Orders:
    • Traditio: Traditional Roman Catholic Internet Site. (Rev. M.E. Morrison; Bishop Antoine Joseph Aneed)
    • Confraternity of St. Joseph. (Rev. Paolo Rosari; ?)
    • Society of the Virgin Mary. (Bishop Patrick Taylor; Bishop Carlos Duarte Costa)
    • Traditional Romn Catholic Archdiocese. (Rev. Anton Metzger; Archbishop Anthony Savage; Bishop Carlos Duarte Costa)
    • Confrérie du Paraclet. (Bishop Albinus, Archbishop Ngo Dinh Thuc)

Conservative Roman Catholic Priests:

• Institute on Religious Life.
• Confraternity of Catholic Clergy.
• Sacerdotal Society of the Holy Cross (Opus Dei). (Rev. Josemaria Escriva)
• Legionaires of Christ. (Rev. Marcial Maciel)
• Community of Saint John. (Rev. Marie-Dominique Philippe)
• Franciscan Missionaries of the Eternal Word. (Community of Priests and Brothers founded by Mother Angelica)
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Liberal Roman Catholic Priests:

• The Web Site of Rev. Andrew Greeley.
• The Web Site of Rev. Bernard Lonergan, S.J. (Peter Monette & Paul Allen)

Radical Roman Catholic Priests:

• The Web Site of Mgr. Jacques Gaillot, Titular Bishop of Partenia.
• The Web Site of Rev. Antonio Maione's Community of the Ascension.

Roman Catholics with Popes of Their Own:

• One, Holy, Catholic, Apostolic and Palmarian Church (Clemente Dominguez Gomez [Pope Gregory XVII])
• Order of the Magnificat of the Mother of God (Apostles of Infinite Love). (Bro. John, [Pope Gregory XVII])
• True Catholics. (Rev. Lucian Pulvermacher, OFM Cap. [Pope Pius XIII])
• Catholic Church. (Msgr. Maurice Archieri [Vicarius Christus, Pierre II])
• RC Church (Pope Michael I)