Religious Institutes of Men 

The names in brackets are alternate organizational names, and the initials in parentheses denote the self-identifying symbol used by members when signing documents. This list does not include all the Religious Orders of the Catholic Church.

• Augustinians [Order of St. Augustine] (O.S.A.)

• Barnabites [Clerics Regular of St. Paul] (C.R.S.P.)

• Belgian Foreign Missionaries of Scheut [Congregation of the Immaculate Heart of Mary, Missionaries of Scheut] (C.I.C.M.)

• Benedictines [Benedictine Fathers] (O.S.B.) 

• Carmelites [Brothers of Our Lady of Mount Carmel, Calced Carmelite Fathers, Calced Carmelites, Discalced Carmelites] (O.C.C.) (O.C.D.)

• Brothers of the Sacred Heart (S.C.) Comboni Missionaries [Comboni Missionaries of the Heart of Jesus, Verona Fathers] (F.S.C.J.) (M.C.C.J.) 

• Capuchins [Capuchin Fathers, Capuchin Franciscans, Franciscan Capuchins, Order of Friars Minor] (O.M.Cap.) (O.F.M.Cap.)

• Catholic Foreign Mission Society [Maryknoll] (M.M.)

• Christian Brothers [Brothers of the Christian Schools] (F.S.C.) 

• Claretian Missionaries (C.M.F.)

• Comboni Missionaries [Comboni Missionaries of the Heart of Jesus, Verona Fathers] (M.C.C.J.) 

• Congregation of the Augustinians of the Assumption (A.A.)

• Congregation of Holy Cross [Brothers of the Congregation of Holy Cross, Priests of the Congregation of Holy Cross] (C.S.C.)

• Congregation of Priests of the Sacred Heart [Sacred Heart Fathers] (S.C.J.) (The Dehonians)

• Congregation of the Blessed Sacrament (S.S.S.) 

• Congregation of the Immaculate Heart of Mary [Missionhurst, Congregation of the Immaculate Heart of Mary] (C.I.C.M.)

• Congregation of the Sacred Hearts of Jesus and Mary [Picpus Fathers (C.C.J.M.)] (SS.CC.) 

• Conventuals [Order of Friars Minor Conventual, Conventual Franciscans] (O.F.M.Conv.)

• Crosier Fathers [Canons Regular of the Order of the Holy Cross, Fathers of the Holy Cross] (O.S.C) 

• Discalced Carmelites(O.C.D.) Dominicans [Order of Preachers] (O.P.)

• Franciscans [Franciscan Fathers, Order of Friars Minor] (O.F.M.)

• Glenmary Home Missioners (Glmy.) 

• Hijos de la Sagrada Familia [Sons of the Holy Family] (S.F.) 

• Holy Ghost Fathers [Congregation of the Holy Ghost and of the Immaculate Heart of Mary, Spiritans] (C.S.Sp.)

• Holy Fathers of Notre Dame [unknown] 

• Jesuits [Society of Jesus] (S.J.)

• Marian Fathers [Congregation of the Marians of the Immaculate Conception] (M.I.C.)

• Marianists, Marists (S.M.) 

• Marist Brothers (F.M.S.) 

• Missionaries of La Salete [Missionaries of Our Lady of La Salette] (M.S.) 

• Missionaries of the Holy Apostles (M.S.A.)

• Missionaries of the Holy Spirit (MSpS)

• Missionaries of the Sacred Heart (M.S.C.)

• Missionary Servants of the Most Holy Trinity ((M.S.S.S.T.) (S.T.)

• 5 Oblates of Mary Immaculate [Missionary Oblate Fathers of Mary Immaculate, Oblate Fathers, Oblates of Mary] (O.M.I.) Pallotines [Society of the Catholic Apostolate] (S.A.C.)

• Order of Cistercians of the Strict Observance (OCist, SOCist)

• Order of the Discalced Brothers of the Blessed Virgin Mary of Mount Carmel (O.C.D.)

• Passionists [Congregation of the Passion] (C.P.) 

• Paulist Fathers (C.S.P.)

• Premonstratensians [Canons Regular of Premontre, Norbertine Fathers, Norbertines] (O. Praem.) 

• Redemptorists [Congregatio Sanctissimi Redemptoris] (C.Ss.R.)

• Regular Franciscans [Third Order Regular of St. Francis] (T.O.R.)

• Rosminians [Institute of Charity](I.C.)

• St. Columbans Foreign Mission Society (S.S.C.) Salvatorians [Society of the Divine Savior] (S.D.S.)

• Seminary of the Foreign Missions Servites (O.S.M.)

• Society of African Missions (S.M.A.)

• Society of the Atonement [Franciscan Friars of the Atonement, Graymoor Friars] (S.A.)

• Society of the Divine Word (S.V.D.)

• Society of the Precious Blood (C.PP.S.)

• Society of St. Edmund [Edmundites, Society of St. Edmund Fathers, Society of the Fathers of St. Edmund] (S.S.E.)

• Sons of the Holy Family (S.F.) 

• Sons of the Immaculate Heart of the Blessed Virgin Mary (C.M.F.)

• Sulpicians [Society of St. Sulpice] (S.S.)

• Theatines [Theatine Fathers] (C.R.)

• Trappists [The Cistercian Order of the Strict Observance] (O.C.S.O.)

• Vincentians [Congregation of the Mission] (C.M.)

• Xaverians [Brothers of St. Francis Xavier] (C.F.X.)