List of ecclesiastical abbreviations
The ecclesiastical words most commonly abbreviated at all times are proper names, titles, of persons or corporations, and words of frequent occurrence. A list of those used in Roman Republican and early Imperial times may be seen in James Chidester Egbert, Jr.'s Latin Inscriptions, 417–459.
History
The Jewish scribes and Talmudic scholars also had frequent recourse to abbreviations. Between the seventh and ninth centuries the ancient Roman system of abbreviations gave way to a more difficult one that gradually grew up in the monastic houses and in the chanceries of the new Teutonic kingdoms.Merovingian, Lombard, and Anglo-Saxon scripts offer each their own abbreviations, not to speak of the unique scotica manus or libri scottice scripti. Eventually such productive centres of technical manuscripts as the Papal Chancery, the theological schools of Paris and Oxford, and the civil-law school of Bologna set the standards of abbreviations for all Europe.
Manuscripts
Medieval manuscripts abound in abbreviations, owing in part to the abandonment of the uncial, or quasi-uncial, and the almost universal use of the cursive, hand. The medieval writer inherited a few from Christian antiquity; others he invented or adapted, in order to save time and parchment.They are found especially in manuscripts of scholastic theology and canon law, annals and chronicles, the Roman law, and in administrative documents, civil and privileges, bulls, rescripts. They multiplied with time, and were never so numerous as on the eve of the discovery of printing; many of the early printed books offer this peculiarity, together with other characteristics of the manuscript page.
Printing
The development of printing brought about the abandonment of many abbreviations, while it suggested and introduced new ones a process also favoured by the growth of ecclesiastical legislation, the creation of new offices, etc. There was less medieval abbreviation in the text of books much used on public occasions, e.g. missals, antiphonaries, Bibles; in one way or another the needs of students seem to have been the chief cause of the majority of medieval abbreviations.The means of abbreviation were usually full points or dots, the semicolon, lines. Vowel-sounds were frequently written not after, but over, the consonants. Certain letters, like p and q, that occur with extreme. frequency, e.g. in prepositions and terminations, became the source of many peculiar abbreviations; similarly, frequently recurring words like et, est. Habit and convenience are today the principal motives for using abbreviations.
Most of those in actual use fall under one or other of the following heads: Administrative, Liturgical, Scholastic, and Chronological.
Administrative
The first class of abbreviations includes those used in the composition of Pontifical documents. They were once very numerous, and lists of them may be seen in the works quoted below. It may be well to state at once that since 29 December 1878, by order of Leo XIII, the great papal documents are no longer written in the old Gothic hand known as bollatico; all abbreviations, with the exception of a few obvious ones, like S.R.E., were abolished by the same authority. In the transaction of ordinary business the Roman Congregations are wont to use certain brief and pithy formulas. They are not, correctly speaking, abbreviations. For a list of these see Canon law. This class includes also the abbreviations for the names of most sees.The full Latin titles of all existing dioceses may be seen in the Roman annual, "Gerarchia Cattolica", a complete list of the Latin names of all known dioceses is found in the large folio work of the Comte de Mas Latrie, "Trésor de chronologie, d'histoire et de géographie". For the same purpose the reader may also consult the episcopal catalogues of the Benedictine Pius Bonifacius Gams, "Series Episcoporum Ecclesiae Catholicae", and the Franciscan Conrad Eubel, Hierarchia Catholica Medii Ævi.
Under this general heading may be included all abbreviated forms of addresses in ordinary intercourse, whether of individuals or of members of religious orders, congregations, institutes, to which may be added the forms of addresses usual for members of Catholic lay societies and the Papal orders of merit. The abbreviations of the titles of Roman Congregations, and of the individual canonical ecclesiastical authorities, belong also to this class.
Liturgical
A second class of abbreviations includes those used in the description of liturgical acts or the directions for their performance, e.g. the Holy Mass, the Divine Office, the ecclesiastical devotions, etc. Here may also be classed the abbreviated forms for the name of God, Jesus Christ, and the Holy Ghost; also for the names of the Blessed Virgin, the saints, etc.; likewise abbreviations used in the administration of the Sacraments, mortuary epitaphs, etc. ; finally some miscellaneous abbreviations like those used in the publication of documents concerning beatification and canonization.Scholastic
In the third class belong scholastic abbreviations, used to designate honorific titles acquired in the schools, to avoid the repetition of lengthy titles of books and reviews, or to facilitate reference to ecclesiastical and civil legislation.Chronological
In the fourth class of abbreviations belong all such as are used to describe the elements of the year, civil or ecclesiastical.Abbreviations used in apostolic rescripts
- Absoluo. – Absolutio
- Alr. – Aliter
- Applica. – Apostolica
- Appatis. – Approbatis
- Archiepus. – Archiepiscopus
- Aucte. – Auctoritate
- Canice. – Canonice
- Card. – Cardinalis
- Cens. – Censuris
- Circumpeone. – Circumspectione
- Coione. – Communione
- Confeone. – Confessione
- Consciae. – Conscientiae
- Constbus – Constitutionibus
- Discreoni. – Discretioni
- Dispensao. – Dispensatio
- Dnus – Dominus
- Ecclae. – Ecclesiae
- Ecclis. – Ecclesiasticis
- Effum. – Effectum
- Epus. – Episcopus
- Excoe. – Excommunicatione
- Exit. – Existit
- Fr. – Frater
- Frum. – Fratrum
- Gnalis – Generalis
- Humil. – Humiliter
- Humoi. – Hujusmodi
- Igr. – Igitur
- Infraptum. – Infrascriptum
- Intropta. – Introscripta
- Irregulte. – Irregularitate
- Lia. – Licentia
- Litma. – Legitima
- Lre. – Litterae
- Lte. – Licite
- Magro. – Magistro
- Miraone. – Miseratione
- Mrimonium. – Matrimonium
- Nultus. – Nullatenus
- Ordinaoni. – Ordinationi
- Ordio. – Ordinario
- Pbr. – Presbyter
- Penia. – Poenitentia
- Peniaria. – Poenitentiaria
- Pntium. – Praesentium
- Poe. – Posse
- Pontus. – Pontificatus
- PP. – Papa
- Pr. – Pater
- Pror. – Procurator
- Ptur. – Praefertur
- Ptus. – Praefatus
- Qd. – Quod
- Qmlbt. – Quomodolibet
- Qtnus. – Quatenus
- Relione. – Religione
- Rlari. – Regulari
- Roma. – Romana
- Salri. – Salutari
- Snia. – Sententia
- Sntae., Stae. – Sanctae
- Spealer. – Specialiter
- Spualibus – Spiritualibus
- Supplioni. – Supplicationibus
- Thia, Theolia. – Theologia
- Tli. Tituli –
- Tm. – Tantum
- Tn. – Tamen
- Venebli – Venerabili
- Vrae. – Vestrae
Abbreviations in general use, chiefly ecclesiastical
- A.B. – Artium Baccalaureus
- Ab. – Abbas
- Abp. – Archbishop
- Abs. – Absens
- A.C. – Auditor Camerae
- AC – Ante Christum ; anno Christi
- ACN – Ante Christum Natum
- A.D. – Anno Domini
- a.d. – ante diem
- Adm. Rev. – Admodum Reverendus
- Adv. – Adventus
- Alb. – Albus
- al. – alii, alibi, alias
- A.M. – Anno Mundi
- A.M. – Artium Magister
- A.M.D.G. – Ad Majorem Dei Gloriam
- An. – Annus
- Ann. – Anni
- Ana, Ant. – Antiphon
- Apost. – Apostolus
- Ap. Sed. – Apostolica Sedes
- Ap. Sed. Leg. – Apostolicae Sedis Legatus
- Archiep. – Archiepiscopus
- Archid. – Archidiaconus
- Archiprb. – Archipresbyter
- A.R.S. – Anno Reparatae Salutis
- A.U. – Alma Urbs
- Authen. – Authentica
- Aux. – Auxilium, Auxilio
- B.A. – Baccalaureus Artium
- B. BB. – Beatus, Beati
- B.C. – Before Christ
- B.C.L. – Baccalaureus Civilis Legis
- B.D. – Bachelor of Divinity
- B.F. – Bona Fide
- Ben. – Benedictio
- Benevol. – Benevolentia
- Bon. Mem. – Bonae Memoriae
- B.P. – Beatissime Pater
- Bro. – Brother
- B. Se. – Baccalaureus Scientiarum
- B.U.J. – Baccalaureus Utriusque Juris
- B.T. – Baccalaureus Theologiae
- B.V. – Beatitudo Vestra
- B.V. – Beata Virgo
- B.V.M. – Beata Virgo Maria
- Cam. – Camera
- Cam. Ap. – Camera Apostolica
- Can. – Canonicus
- Canc. – Cancellarius
- Cap. – Capitulum
- Cap. de seq. – Capitulum de Sequenti
- Capel. – Capella
- Caus. – Causa
- C.C. – Curatus
- CC. VV. – Clarissimi Viri
- Cen. Eccl. – Censura Ecclesiastica
- Cla. – Clausula
- Cl., Clico. – Clericus, Clerico
- Clun. – Cluniacenses
- C.M. – Causa Mortis
- Cod. – Codex
- Cog. Leg. – Cognatio Legalis
- Cog. Spir. – Cognatio Spiritualis
- Coll. Cone. – Collectio Conciliorum
- Comm. Prec. – Commemoratio Praecedentis
- Comm. Seq. – Commemoratio Sequentis
- Compl. – Completorium
- Con. – Contra
- Cone. – Concilium
- Conf. – Confessor
- Conf. Doct. – Confessor et Doctor
- Conf. Pont. – Confessor Pontifex
- Cons. – Consecratio
- Consecr. – Consecratus
- Const. Ap. – Constitutio Apostolica
- Cr. – Credo
- D. – Dominus
- d. – dies
- D.C.L. – Doctor Civilis Legis
- D.D. – Doctores
- D.D. – Donum dedit; Dedicavit
- D.D. – Doctor Divinitatis
- Dec. – Decanus
- Def. – Defunctus
- D.G. – Dei Gratia
- D.N. – Dominus Noster
- D.N.J.C. – Dominus Noster Jesus Christus
- DN, DNS, DNUS – Dominus
- Doct. – Doctor
- Dom. – Dominica
- D.O.M. – Deo Optimo Maximo
- Doxol. – Doxologia
- D.R. – Decanus Ruralis
- DS – Deus
- D.Se. – Doctor Scientiarum
- D.V. – Deo Volente
- Dupl. – Duplex
- Dupl. Maj. – Duplex Major
- Dupl. I. Cl. – Duplex Primae Classis
- Dupl. II. Cl. – Duplex Secundae Classis
- Eccl. – Ecclesiasticus
- E., Eccl. – Ecclesia
- El. – Electio, Electus
- Emus – Eminentissimus
- EPS, EP., Episc. – Episcopus
- Et. – Etiam
- Evang. – Evangelium
- Ex. – Extra
- Exe. – Excommunicatus, Excommunicatio
- Fel. Mem. – Felicis Memoriae
- Fel. Rec. – Felicis Recordationis
- Fer. – Feria
- Fr., F. – Frater, Frere
- Fund. – Fundatio
- Gen. – Generalis
- Gl. – Gloria
- Gr. – Gratia
- Grad. – Gradus
- Grat. – Gratias ; or Gratis
- hebd. – Hebdomada
- Hom. – Homilia
- hor. – hora
- IC – Jesus
- Id. – Idus
- Igr. – Igitur
- IHS – Jesus ; sometimes misinterpreted as Iesus Hominum Salvator "Jesus Saviour of Men"
- Ind. – Indictio
- Ind. – Index
- Inq. – Inquisitio
- i.p.i. – in partibus infidelium
- Is. – Idus
- J.C. – Jesus Christus
- J.C.D. – Juris Canonici Doctor, Juris Civilis Doctor
- J.D. – Juris Doctor
- J.M.J. – Jesus, Maria, Joseph
- Jo., Joann. – Joannes
- J.U.D. – Juris Utriusque Doctor
- Jud. – Judicium
- J.U.L. – Juris Utriusque Licentiatus
- Jur. – Juris
- Kal. – Kalendae
- Laic. – Laicus
- Laud. – Laudes
- L.C.D. – Legis Civilis Doctor
- l.c.; loc. cit. – Loco citato
- Lect. – Lectio
- Legit. – Legitime, Legitimus
- L.H.D. – Litterarum Humaniorum Doctor
- Lib., Lo. – Liber, Libro
- Lic. – Licentia, Licentiatus
- Litt. – Littera
- LL.B. – Legum Baccalaureus
- LL.D. – Legum Doctor
- LL.M. – Legum Magister
- Loc. – Locus
- Lov. – Lovanium
- Lovan. – Lovanienses
- L.S. – Loco Sigilli
- Lud. – Ludovicus
- M. – Maria
- M.A. – Magister Artium
- Mag. – Magister
- Mand. – Mandamus
- Mand. Ap. – Mandatum Apostolicum
- Mart., M., MM. – Martyr, Martyres
- Mat. – Matutinum
- Matr. – Matrimonum
- Mgr., Msgr., or Mons. – Monsignor
- Miss. – Missa ; Missionarius
- Miss. Apost., M.A. – Missionarius Apostolicus
- mph., mp. - Metaphysics
- M.R. – Missionarius Rector
- m.t.v. – mutatur terminatio versiculi
- Mr. – Mother
- Nativ. D.N.J.C. – Nativitas Domini Nostri Jesu Christi
- N. D. – Nostra Domina, Notre Dame
- Nigr. – Niger
- No. – Nobis
- Nob. – Nobilis, Nobiles
- Noct. – Nocturnum
- Non. – Nonae
- Nostr. – Noster, nostri
- Not. – Notitia
- N.S. – Notre Seigneur, Nostro Signore
- N.S. – New Style
- N.T. – Novum Testamentum
- Ntri. – Nostri
- Nup. – Nuptiae
- Ob. – Obiit
- Oct. – Octava
- Omn. – Omnes, Omnibus
- Op. Cit. – Opere Citato
- Or. – Oratio
- Ord. – Ordo, Ordinatio, Ordinarius
- Or. Orat. – Orator, Oratorium
- O.S. – Old Style
- O.T. – Old Testament
- Oxon. – Oxonium, Oxonienses
- P. – Pater, Pere
- Pa. – Papa ; Pater
- Pact. – Pactum
- Pasch. – Pascha
- Patr. – Patriarcha
- Pent. – Pentecostes
- Ph. B. – Philosophiae Baccalaureus
- Ph.D. – Philosophiae Doctor
- Phil. – Philosophia
- Ph. M. – Philosophiae Magister
- P.K. – Pridie Kalendas
- Poenit. – Poenitentia
- Poenit. Ap. – Poenitentiaria Apostolica
- Pont. – Pontifex
- Pont. – Pontificatus
- Pont. Max. – Pontifex Maximus
- Poss. – Possessor, Possessio
- PP. – Papa ; Pontificum
- P.P. – Parochus
- PP. AA. – Patres Amplissimi
- P.P.P. – Propria Pecunia Posuit
- P.R. – Permanens Rector
- Pr. – Pastor
- Praef. – Praefatio
- Presbit. – Presbyter, Priest
- Prof. – Professus, Professio, Professor
- Prop. Fid. – Propaganda Fide
- Propr. – Proprium
- Prov. – Provisio, Provisum
- Ps. – Psalmus
- Pub., Publ. – Publicus, Publice
- Purg. Can. – Purgatio Canonica
- Quadrag. – Quadragesima
- Quinquag. – Quinquagesima
- R. – Responsorium
- R. – Roma
- Rescr. – Rescriptum
- R.D. – Rural Dean
- Req. – Requiescat
- Resp. – Responsum
- R.I.P. – Requiescat In Pace
- Rit. – Ritus
- Rom. – Romanus, Romana
- R.P. – Reverendus Pater, Reverend Pere
- RR. – Rerum ; Regesta
- Rt. Rev. – Right Reverend
- Rub. – Ruber
- Rubr. – Rubrica
- S., Sacr. – Sacrum
- Sab., Sabb. – Sabbatum
- Saec. – Saeculum
- Sal. – Salus, Salutis
- Salmant. – Salmanticenses
- S.C. – Sacra Congregatio
- S.C.C. – Sacra Congregatio Concilii
- S.C.EE.RR. – Sacra Congregatio Episcoporum et Regularium
- S.C.I. – Sacra Congregatio Indicis
- S.C.P.F. – Sacra Congregatio de Propaganda Fide
- SCS – Sanctus
- s.d. – sine data
- S.D. – Servus Dei
- Semid. – Semiduplex
- Septuag – Septuagesima
- Sexag. – Sexagesima
- Sig. – Sigillum
- Simpl. – Simplex
- Sine Com. – Sine Commemoratione
- s.l. – sine loco
- s.l.n.d. – sine loco nec data
- S.M. – Sanctae Memoriae
- Soc. – Socius, Socii
- S. Off. – Sanctum Officium
- S.P. – Sanctissime Pater
- S.P., S. Petr. – Sanctus Petrus
- S.P. – Summus Pontifex
- S.P.A. – Sacrum Palatium Apostolicum
- Sr. – Sister
- S.R.C. – Sacra Rituum Congregatio
- S.R.E. – Sancta Romana Ecclesia, Sanctae Romanae Ecclesiae
- SS. – Scriptores
- SS.D.N. – Sanctissimus Dominus Noster
- SS., S. – Sanctus, Sancti
- S.T.B. – Sacrae Theologiae Baccalaureus
- S.T.D. – Sacrae Theologiae Doctor
- S.T.L. – Sacrae Theologiae Licentiatus
- S.T.P. – Sanctae Theologiae Professor
- Suffr. – Suffragia
- S.V. – Sanctitas Vestra
- Syn. – Synodus
- Temp. – Tempus, Tempore
- Test. – Testes, Testimonium
- Theol. – Theologia
- Tit. – Titulus, Tituli
- T.R.P. – Très Révérend Père
- Ult. – Ultimo
- Usq. – Usque
- Ux. – Uxor
- V., Ven., VV. – Venerabilis, Venerabiles
- V., Vest. – Vester
- Vac. – Vacat, Vacans
- Val. – Valor
- Vat. – Vaticanus
- Vba. – Verba
- Vers. – Versiculus
- Vesp. – Vesperae
- V.F., Vic. For. – Vicarius Foraneus
- V.G. – Vicarius Generalis
- Vic. – Vicar
- Vid. – Vidua
- Vid., Videl. – Videlicet
- Vig. – Vigilia
- Viol. – Violaceus
- Virg. – Virgo
- Virid. – Viridis
- V.M. – Vir Magnificus
- V. Rev. – Very Reverend
- V.T. – Vetus Testamentum
- XC., XCS. – Christus
Abbreviations in catacomb inscriptions
- A.D. – Ante Diem ; or Anima Dulcis
- A.Q.I.C. – Anima Quiescat In Christo
- B., BMT. – Bene Merenti
- B.M. – Bonae Memoriae
- B.F. – Bonae Feminae
- B.I.C. – Bibas In Christo
- B.M.F. – Bene Merenti Fecit
- B.Q. – Bene Quiescat
- C. – Consul
- CC. – Consules
- C.F. – Clarissima Femina
- Cl. V. – Clarissimus Vir
- C.O. – Conjugi Optimo
- C.O.B.Q. – Cum Omnibus Bonis Quiescat
- COI. – Conjugi
- CS., COS. – Consul
- COSS. – Consules
- C.P. – Clarissima Puella
- D. – Depositus ; or Dulcis
- D.D. – Dedit, Dedicavit
- DEP. – Depositus
- D.I.P. – Dormit In Pace
- D.M. – Diis Manibus
- D.M.S. – Diis Manibus Sacrum
- D.N. – Domino Nostro
- DD. NN. – Dominis Nostris
- E.V. – Ex Voto
- EX. TM. – Ex Testamento
- E VIV. DISC. – E Vivis Discessit
- F. – Fecit ; or Filius ; or Feliciter
- F.C. – Fieri Curavit
- F.F. – Fieri Fecit
- FF. – Fratres ; Filii
- FS. – Fossor
- H. – Haeres ; Hic
- H.L.S. – Hoc Loco Situs
- H.M.F.F. – Hoc Monumentum Fieri Fecit
- H.S. – Hic Situs
- ID. – Idibus
- IDNE. – Indictione
- I.L.H. – Jus Liberorum Habens
- INB. – In Bono
- IND. – Same as IDNE
- INP – In Pace
- I.X. – In Christo
- K. – Kalendas ; or Care, Carus, Cara ; or Carissimus
- K.B.M. – Karissimo Bene Merenti
- L. – Locus
- L.M. – Locus Monumenti
- L.S. – Locus Sepulchri
- M. – Martyr, or Memoria or Monumentum
- MM. – Martyres
- M.P. – Monumentum Posuit
- MRT. – Merenti
- N. – Nonas ; or Numero
- NN. – Nostris or Numeri
- O. – Hora ; Obiit
- OB. IN XTO. – Obiit In Christo
- OMS. – Omnes
- OP. – Optimus
- P. – Pax ; or Pius ; or Ponendum ; or Pridie ; or Plus
- P.C. – Poni Curavit
- P.C., P. CONS. – Post Consulatum
- P.I. – Poni Jussit
- P.M. – Plus Minus ; or Piae Memoriae ; or Post Mortem
- PP. – Praepositus
- PR.K. – Pridie Kalendas
- PRB. – Presbyter
- PR.N. – Pridie Nonas
- P.T.C.S. – Pax Tibi Cum Sanctis
- PZ. – Pie Zeses
- Q., Qui. – Quiescit
- Q.B.AN. – Qui Bixit Annos
- Q.I.P. – Quiescat In Pace
- Q.V. – Qui Vixit
- R. – Requiescit ; or Refrigerio
- Reg. – Regionis
- S. – Suus, or Situs, or Sepulchrum
- SC. M. – Sanctae Memoriae
- SD. – Sedit
- SSA. – Subscripta
- S.I.D. – Spiritus In Deo
- S.P. – Sepultus, or Sepulchrum
- SS. – Sanctorum
- S.V. – Sacra Virgo
- T., TT. – Titulus, Tituli
- TM. – Testamentum
- V. – Vixit, or Vixisti
- VB. – Vir Bonus
- V.C. – Vir Clarissimus
- VV. CC. – Viri Clarissimi
- V.H. – Vir Honestus
- V. X. – Vivas, Care , or Uxor Carissima
- X., XPC., XS. – Christus
Abbreviations of titles of the principal religious orders and congregations of priests
- A.A. – Augustiniani Assumptionis
- A.B.A. – Antoniani Benedictini Armeni
- C.J.M. – Congregatio Jesu et Mariae
- C.M. – Congregatio Missionis
- C.M. – Congregatio Mariae
- C.P. – Congregatio Passionis
- C.PP.S. – Congregatio Pretiosissimi Sanguinis
- C.R. – Congregatio Resurrectionis
- C.R.C.S. – Clerici Regulares Congregationis Somaschae
- C.R.I.C. – Canonici Regulares Immaculatae Conceptionis
- C.R.L. – Canonici Regulares Lateranenses
- C.R.M. – Clerici Regulares Minores
- C.R.M.D. – Clerici Regulares Matris Dei
- C.R.M.I. – Clerici Regulares Ministrantes Infirmis
- C.R.P. – Congregatio Reformatorum Praemonstratensium
- C.R.S.P. – Clerici Regulares Sancti Pauli
- C.R.S.P. – Clerici Regulares Pauperum Matris Dei Scholarum Piarum
- C.R.T. – Clerici Regulares Theatini
- C.S.B. – Congregatio Sancti Basilii
- C.S.C. – Congregatio A Sancta Cruce
- C.S.P. – Congregatio Sancti Pauli
- C.S. Sp. – Congregatio Sancti Spiritus
- C.S.V. – Clerici Sancti Viatoris
- C.SS.CC. – Congregatio Sacratissimorum Cordium
- C. SS. R. – Congregatio Sanctissimi Redemptoris
- Inst. Char. – Institutum Caritatis
- L.C. – Legio Christi
- M.C. – Missionaries of Charity
- M.S. – Missionaries of La Salette
- M.S.C. – Missionarii Sancti Caroli
- M.S.C. – Missionarii Sacratissimi Cordis
- O.C. – Ordo Caritatis
- O. Camald. – Ordo Camaldulensium
- O. Cart. – Ordo Cartusiensis
- O. Cist. – Ordo Cisterciensium
- O.C.C. – Ordo Carmelitarum Calceatorum
- O.C.D. – Ordo Carmelitarum Discalceatorum
- O.C.R. – Ordo Reformatorum Cisterciensium
- O.F.M. – Ordo Fratrum Minorum
- O.F.M. Rec. - Order of Friars Minor Recollects
- O.M. – Ordo Minimorum
- O. Merced. – Ordo Beatae Mariae Virginis de Redemptione Captivorum
- O.M.C. – Ordo Minorum Conventualium
- O.M. Cap., O.F.M. Cap., O.M.C. – Ordo Minorum Cappucinorum
- O.M.I. – Oblati Mariae Immaculatae
- O.P., Ord. Fratr. Praed. – Ordo Praedicatorum
- Ord. Praem. – Ordo Praemonstratensium
- O.S.A. – Ordo Sancti Augustini
- O.S.B. – Ordo Sancti Benedicti
- O.S.C. – Oblati Sancti Caroli
- O.S.F.C. – Ordinis Sancti Francisci Capuccini
- O.S.F.S. – Oblati Sancti Francisci Salesii
- O.S.H. – Ordo Sancti Hieronymi
- O.S.M. – Ordo Servorum Mariae
- O.SS.C. – Oblati Sacratissimi Cordis
- O. Trinit. – Ordo Sanctissimae Trinitatis
- P.O. – Pretres de l'Oratoire, Presbyteri Oratorii
- P.S.M. – Pia Societas Missionum
- P.S.S. – Presbyteri Sancti Sulpicii, Pretres de S. Sulpice
- S.C. – Salesianorum Congregatio
- S.D.S. – Societas Divini Salvatoris
- S.V.D. – Societas Verbi Divini
- S.J. – Societas Jesu
- S.M. – Societas Mariae
- S.P.M. – Societas Patrum Misericordiae
- S.J.C. – Canonici Regulares Sancti Joannis Cantii
- S.S.C. – Columban Fathers
- S.S.S. – Societas Sanctissimi Sacramenti
- S.T.S. – Societas Trinitatis Sanctae