| Name | Abbreviation | Nickname | Type |
|---|
| Agostiniani Scalzi | O.A.D. | Discalced Augustinians | Mendicant Order |
| Antonian Order of Saint Ormizda of the Chaldeans (Chaldean) | O.A.O.C. | | Monastic Order |
| Antonin Maronite Order (Maronite) | O.A.M. | | Monastic Order |
| Arrouhbaniat Albassiliat Almoukhalissiat (Melkite Greek) | B.S. | Basilian Salvatorian Order | Monastic Order |
| Ar-Rouhbanyat Al-Marounyat Liltoubawyat Mariam Al-Azra (Maronite) | O.M.M. | Aleppians | Monastic Order |
| Augustinians of the Assumption | A.A. | Assumptionists | Clerical Religious Congregation |
| Basilian Chouerite Order of Saint John the Baptist (Melkite Greek) | B.C. | | Monastic Order |
| Basilian Order of Saint Josaphat (Order of St. Basil the Great) | O.S.B.M. | Order of St. Basil the Great | Monastic Order |
| Brothers of Our Lady of Mercy | F.D.M. | CMM Brothers | Lay Religious Congregation |
| Brothers of the Sacred Heart | S.C. | | Lay Religious Congregation |
| Camaldolese Hermits of Mount Corona | E.C.M.C. | Camaldolese | Monastic Order |
| Canons Regular of Saint Augustine of the Congregation of Windesheim | C.R.V. | | Order of Canons Regular |
| Canons Regular of the Congregation of Saint Victor | C.R.S.V. | | Order of Canons Regular |
| Canons Regular of the Congregation of the Brothers of Community Life | C.R.V.C. | | Order of Canons Regular |
| Canons Regular of the Congregation of the Most Holy Saviour of the Lateran | C.R.L. | | Order of Canons Regular |
| Canons Regular of the Hospitaller Congregation of Great Saint Bernard | C.R.B. | | Order of Canons Regular |
| Canons Regular of the Immaculate Conception | C.R.I.C. | | Order of Canons Regular |
| Canons Regular of the Lateran Congregation of Austria | C.R.L.A. | | Order of Canons Regular |
| Canons Regular of the Mother of God | C.R.M.G. | | Order of Canons Regular |
| Canons Regular of the Order of the Holy Cross | O.S.C. | Crosier Fathers | Order of Canons Regular |
| Capuchin Tertiary Religious of Our Lady of Sorrows | T.C. | | Clerical Religious Congregation |
| Carmelites of Mary Immaculate | C.M.I. | | Clerical Religious Congregation |
| Carthusian Order | O. Cart. | | Monastic Order |
| Chemin Neuf Institute | I.C.N. | | Clerical Religious Congregation |
| Clerics of Saint Viator | C.S.V. | Viatorians | Clerical Religious Congregation |
| Clerics Regular Minor | C.R.M. | Caracciolini | Order of Clerics Regular |
| Clerics Regular of St. Paul | B. | Barnabites | Order of Clerics Regular |
| Clerics Regular of the Mother of God | O.M.D. | | Order of Clerics Regular |
| Clerks Regular of Somasca | C.R.S. | Padri Somachi | Order of Clerics Regular |
| Comboni Missionaries of the Heart of Jesus | M.C.C.I. | | Clerical Religious Congregation |
| Company of Mary for the Education of the Deaf | S. M. | | Clerical Religious Congregation |
| Confederation of Canons Regular of St. Augustine | C.R.S.A. | | Order of Canons Regular |
| CongregaciΓ³n de San Pedro ad-Vincula | S.P. ad V. | | Clerical Religious Congregation |
| Congrégation du Sacré-Coeur | S.C.J. | Pères de Timon David | Clerical Religious Congregation |
| Congregation of Christian Doctrine | D.C. | Dottrinari | Clerical Religious Congregation |
| Congregation of Christian Workers of Saint Joseph Calasanz | C.Op. | Calasantini | Clerical Religious Congregation |
| Congregation of Clerics Regular | C.R. | Theatines | Order of Clerics Regular |
| Congregration of Jesus the Priest | C.G.S. | | Clerical Religious Congregation |
| Congregation of Marian Fathers of the Immaculate Conception of the Most Blessed Virgin Mary | M.I.C. | Marian Fathers | Clerical Religious Congregation |
| Congregation of Mariannhill Missionaries | C.M.M. | Marianhiller Missionare | Clerical Religious Congregation |
| Congregation of Missionaries of the Holy Family | M.S.F. | | Clerical Religious Congregation |
| Congregation of Saint John the Baptist Precursor | C.S.I.B.P. | | Clerical Religious Congregation |
| Congregation of Saint Joseph | C.S.I. | Giuseppini del Murialdo | Clerical Religious Congregation |
| Congregation of Saint Michael the Archangel | C.S.M.A. | Michaelites | Clerical Religious Congregation |
| Congregation of Saint Theresa of the Child Jesus “Little Flower” | C.S.T. | | Clerical Religious Congregation |
| Congregation of Servants of Charity | S.d.C. | Guanellian Priests and Brothers | Clerical Religious Congregation |
| Congregation of St. Basil | C.S.B. | Basilian Fathers | Clerical Religious Congregation |
| Congregation of the Blessed Sacrament | S.S.S. | Blessed Sacrament Fathers | Clerical Religious Congregation |
| Congregation of Holy Cross | C.S.C. | Holy Cross Fathers | Clerical Religious Congregation |
| Congregation of the Holy Family of Nazareth of Blessed Father Piamarta | F.N. | | Clerical Religious Congregation |
| Congregation of the Holy Spirit | C.S.Sp. | Holy Ghost Fathers (Spiritans) | Clerical Religious Congregation |
| Congregation of the Immaculate Heart of Mary | C.I.C.M. | Scheutists | Clerical Religious Congregation |
| Congregation of the Legionaries of Christ | L.C. | Legionaries of Christ | Clerical Religious Congregation |
| Congregation of the Missionaries of Saint Charles Borromeo | C.S. | Scalabrinians | Clerical Religious Congregation |
| Congregation of the Most Holy Redeemer | C.SS.R. | Redemptorists | Clerical Religious Congregation |
| Congregation of the Passion | C.P. | Passionists | Clerical Religious Congregation |
| Congregation of the Priestly Fraternity | C.F.S. | | Clerical Religious Congregation |
| Congregation of the Priests of the Sacred Heart | S.C.I. | Dehonians | Clerical Religious Congregation |
| Congregation of the Resurrection of Our Lord Jesus Christ | C. R. | Resurrectionists | Clerical Religious Congregation |
| Congregation of the Sacred Hearts of Jesus and Mary | SS.CC. | Picpus Fathers | Clerical Religious Congregation |
| Congregation of the Sacred Stigmata | C.S.S. | Stigmatine Fathers | Clerical Religious Congregation |
| Congregation of the Schools of Charity | C.S.Ch. | | Clerical Religious Congregation |
| Congregation of the Sons of Mary Immaculate | F. M. I. | Pavonians | Clerical Religious Congregation |
| Congregation of the Sons of Merciful Love | F.A.M. | | Clerical Religious Congregation |
| Congregazione dei Figli dell’Immacolata Concezione | C.F.I.C. | Concezionisti | Lay Religious Congregation |
| Congregazione Mechitarista | C.A.M. | Mechitarists | Monastic Order |
| Congregazione Sacra Famiglia di Bergamo | C.S.F. | | Clerical Religious Congregation |
| Consolata Missionaries | I.M.C. | Consolata Missionaries | Clerical Religious Congregation |
| Discalced Mercedarians | O. M. D. | | Mendicant Order |
| Fathers of Mercy | C.P.M. | | Clerical Religious Congregation |
| Fils de Marie Immaculée | F.M.I. | Pères de Chavagnes | Clerical Religious Congregation |
| Franciscan Friars of the Atonement | S.A. | | Clerical Religious Congregation |
| Franciscan Friars of the Immaculate | F.I. | | Clerical Religious Congregation |
| Franciscan Friars of the Renewal | C.F.R. | | Clerical Religious Congregation |
| Fraternity of Saint Vincent Ferrer | F.S.V.F. | | Clerical Religious Congregation |
| Hijos de la Sagrada Familia | S.F. | | Clerical Religious Congregation |
| Indian Missionary Society | I.M.S. | | Clerical Religious Congregation |
| Institut du ClergΓ© Patriarcal de Bzommar | I.C.P.B. | |
| Institute of Charity | I.C. | Rosminians | Clerical Religious Congregation |
| Institute Voluntas Dei | I.V.D. | | Clerical Secular Institute |
| Institute of SchΓΆnstatt Fathers | P. SchΓΆnstatt | SchΓΆnstatt Fathers | Clerical Secular Institute |
| Institute of the Josephites of Belgium | C.J. | Josephites of Belgium | Clerical Religious Congregation |
| Istituto del Prado | Ist. del Prado | Prado Institute | Clerical Secular Institute |
| Knights of the Cross with the Red Star | O.Cr. | | Order of Canons Regular |
| Little Brothers of Jesus | P.F.J. | Foucauld | Lay Religious Congregation |
| Little Mission for the Deaf and Dumb | P.M.S. | | Clerical Religious Congregation |
| Misioneros de la Natividad de MarΓa | M.N.M. | | Clerical Religious Congregation |
| Missionari dei Poveri | M.O.P. | | Lay Religious Congregation |
| Missionari di S. Giuseppe nel Messico | M.J. | | Clerical Religious Congregation |
| Missionaries of Our Lady of La Salette | M.S. | | Clerical Religious Congregation |
| Missionaries of St. Francis de Sales d’Annecy | M.S.F.S. | Fransalians | Clerical Religious Congregation |
| Missionaries of the Company of Mary | S.M.M. | Montfort Missionaries | Clerical Religious Congregation |
| Missionaries of the Divine Redeemer | M.D.R. | | Clerical Religious Congregation |
| Missionaries of the Holy Spirit | M.Sp.S. | | Clerical Religious Congregation |
| Missionaries of the Immaculate Conception of Lourdes | M. I. C. | Fathers of Garaison | Clerical Religious Congregation |
| Missionaries of the Sacred Heart and Saint Mary of Guadalupe | M. S. C. | | Clerical Religious Congregation |
| Missionaries of the Sacred Heart of Jesus | M.S.C. | Sacred Heart Missionaries | Clerical Religious Congregation |
| Missionaries of the Sacred Hearts of Jesus and Mary | M.SS.CC. | | Clerical Religious Congregation |
| Missionaries of the Sacred Hearts of Jesus and Mary (Mallorca) | M. SS. CC. | | Clerical Religious Congregation |
| Missionaries of Workers | M.O. | | Clerical Religious Congregation |
| Missionary Brothers of the Countryside | F.M.R. | | Clerical Religious Congregation |
| Missionary Congregation of the Blessed Sacrament | M.C.B.S. | | Clerical Religious Congregation |
| Missionary Servants of the Most Holy Trinity | S.T. | | Clerical Religious Congregation |
| Missionary Servants of the Poor | S.d.P. | Morsel of the Poor | Clerical Religious Congregation |
| Missionary Servants of the Word | M. S. P. | | Clerical Religious Congregation |
| Missionary Society of St. Paul | M.S.S.P. | Paulist Missionaries | Clerical Religious Congregation |
| Missionary Sons of the Immaculate Heart of Mary | C.M.F. | Claretians | Clerical Religious Congregation |
| Montfort Brothers of Saint Gabriel | S.G. | | Lay Religious Congregation |
| Oblates of Mary Immaculate | O.M.I. | Oblates of Mary Immaculate | Clerical Religious Congregation |
| Oblates of Saint Joseph | O.S.I. | Josephines of Asti | Clerical Religious Congregation |
| Oblates of St. Francis de Sales | O.S.F.S. | | Clerical Religious Congregation |
| Oblates of the Virgin Mary | O.M.V. | | Clerical Religious Congregation |
| Orden de los Hermanos de BelΓ©n | O.F.B. | Betlemitas | Mendicant Order |
| Orden de San JerΓ³nimo | O.S.H. | Monjes JerΓ³nimos | Monastic Order |
| Order of Augustinian Recollects | O.A.R. | Augustinian Recollects | Mendicant Order |
| Order of Cistercians | O. Cist. | Cistercians | Monastic Order |
| Order of Cistercians of the Strict Observance | O.C.S.O. | Trappists | Monastic Order |
| Order of Discalced Carmelites | O.C.D. | Discalced Carmelites | Mendicant Order |
| Order of Friar Servants of Mary | O.S.M. | Servites | Mendicant Order |
| Order of Friars Minor | O.F.M. | Franciscans | Mendicant Order |
| Order of Friars Minor Capuchin | O.F.M. Cap. | Capuchins | Mendicant Order |
| Order of Friars Minor Conventual | O.F.M. Conv. | Conventual Franciscans | Mendicant Order |
| Order of Friars Preachers | O.P. | Dominicans | Mendicant Order |
| Order of the Pious Schools | Sch. P. | Piarists | Order of Clerics Regular |
| Order of Imitation of Christ | O.I.C. | | Clerical Religious Congregation |
| Order of Lebanese Maronite (Maronite) | O.L.M. | Baladites | Monastic Order |
| Order of Our Lady of Mercy | O. de M. | Mercedarians | Mendicant Order |
| Order of Our Lady of Mt. Carmel | O. Carm. | Carmelites | Mendicant Order |
| Order of Saint Benedict | O.S.B. | Benedictines | Monastic Order |
| Order of Saint Paul the First Hermit | O.S.P.P.E. | Pauline Fathers | Monastic Order |
| Order of St. Augustine | O.S.A. | Augustinians | Mendicant Order |
| Order of the Canons Regular of Premontre; Norbertines | O. Praem. | Premonstratensians | Order of Canons Regular |
| Order of the Holy Cross | O.R.C. | | Order of Canons Regular |
| Order of the Hospitallers of Saint John of God | O.H. | | Mendicant Order |
| Order of the Minims | O.M. | Minimi | Mendicant Order |
| Order of the Ministers of the Sick | M.I. | Camillians | Order of Clerics Regular |
| Order of the Most Holy Trinity | O.SS.T. | Trinitarians | Mendicant Order |
| Order of the Teutonic Knights of Saint Mary’s Hospital in Jerusalem | O.T. | Teutonic Order | Order of Canons Regular |
| Ordine Basiliano Italiano di Grottaferrata | O.S.B.I. | | Monastic Order |
| Ordre Basilien AlΓ©pin (Melkite Greek) | B.A. | | Monastic Order |
| Parochial Cooperators of Christ the King | C.P.C.R. | | Clerical Religious Congregation |
| Pious Workers Rural Catechists | P.O.C.R. | Ardorini Missionaries | Clerical Religious Congregation |
| Poveri Servi della Divina Provvidenza | P.S.D.P. | Don Calabria | Clerical Religious Congregation |
| Priests of Saint Mary of Tinchebray | P.S.M. | | Clerical Religious Congregation |
| Priests of the Sacred Heart of Jesus of BΓ©tharram | S.C.I. di BΓ©th. | | Clerical Religious Congregation |
| Religieux de Saint Vincent de Paul | R.S.V. | | Clerical Religious Congregation |
| Rogationists of the Heart of Jesus | R.C.J. | Rogationists | Clerical Religious Congregation |
| Rosarian Fathers | C.S.R. | | Clerical Religious Congregation |
| Salesians of Saint John Bosco | S.D.B. | Salesians of St. John Bosco | Clerical Religious Congregation |
| Servants of Jesus and Mary | S.I.M. | | Clerical Religious Congregation |
| Servants of the Holy Paraclete | S.P. | | Clerical Religious Congregation |
| Society of Christ for Polish Immigrants | S. Chr. | | Clerical Religious Congregation |
| Society of Divine Vocations | S.D.V. | Vocationists | Clerical Religious Congregation |
| Society of Jesus | S.J. | Jesuits | Order of Clerics Regular |
| Society of Mary | S.M. | Marist Fathers | Clerical Religious Congregation |
| Society of Mary | S. M. | Marianist Fathers | Clerical Religious Congregation |
| Society of Saint Cajetan | P.S.S.G. | | Clerical Religious Congregation |
| Society of Saint Edmund | S.S.E. | Edmundites | Clerical Religious Congregation |
| Society of St. Paul | S.S.P. | Paulines | Clerical Religious Congregation |
| Society of the Divine Savior | S.D.S. | Salvatorians | Clerical Religious Congregation |
| Society of the Divine Word | S.V.D. | Divine Word Missionaries | Clerical Religious Congregation |
| Sons of Charity | F.C. | | Clerical Religious Congregation |
| Sons of Charity | F.d.C.C. | Canossians | Clerical Religious Congregation |
| Sons of Divine Providence | F.D.P. | | Clerical Religious Congregation |
| Sons of Saint Mary Immaculate | F.S.M.I. | | Clerical Religious Congregation |
| Swiss Congregation of Canons Regular of Saint Maurice of Agaune | C.R.A. | | Order of Canons Regular |
| Third Order Regular of St. Francis of Penance | T.O.R. | Franciscan Friars (T.O.R.) | Mendicant Order |
| Ukrainian Studite Monks (Ukrainian) | M.S.U. | | Monastic Order |
| Vincentian Congregation (Syro-Malabar) | C.V. | | Clerical Religious Congregation |
| Xaverian Missionary Fathers | S.X. | Xaverians | Clerical Religious Congregation |
| Other | Other | Other
|
