| Acronym | Sense | Language | Topics | 
| AC | Apostolic Carmel | In English | → Roman catholic church | 
| ACCI | Adventive Cross Cultural Initiatives | In English | → Organizations and associations | 
| ACCRI | Associazione di Cooperazione Cristiana Internazionale | In Italian | → Associations → Development
 | 
| ACEC | Associazione Cattolica Esercenti Cinema (www.acec.it) | In Italian | → Associations → Roman catholic church
 → Cinema, movies
 → Italia
 | 
| AcF | Akademie für christliche Führungskräfte (www.acf.de) | In German | → Academies → Economics
 → Germany
 | 
| ACHA | American Catholic Historical Association | In English | → Associations → History
 → Roman catholic church
 → United States
 | 
| ACU | Australian Catholic University (www.acu.edu.au) | In English | → Higher education, universities → 271
 → Australia
 | 
| ACV | Algemeen Christelijk Vakverbond = CSC | Confédération des Syndicats Chrétiens | In French
 
 | In Dutch | → Organizations and associations → Labour, labour economics
 | 
| ADRA | Adventist Development and Relief Agency | In English | → Organizations and associations → Development
 | 
| AECQ | Assemblée des Évêques Catholiques du Québec | In French | → Roman catholic church → Canada
 | 
| AFA | American Family Association (www.afa.net) | In English | → Associations → United States
 | 
| AIEP | Association Internationale des Études Patristiques = IAPS | International Association of Patristics Studies | In English
 
 | In French | → Associations → Archeology
 → Roman catholic church
 | 
| AiG | Answers in Genesis | In English |  | 
| AIUC | Association Immobilière de l'Union Chrétienne de Bienne | In French | → Associations | 
| AMA | Ausiliarie Missionarie Agostiniane | In Italian | → Roman catholic church | 
| AMORC | Alter Mystischer Orden Rosae Crucis | In German |  | 
| AO | Apostolic Oblates | In English | → Roman catholic church | 
| AOH | Ancient Order of Hibernians (www.aoh.com) | In English | → Organizations and associations → Roman catholic church
 | 
| ARA | Amore Riparazione e Apostolato | In Italian |  | 
| ARN | Access Research Network (www.arn.org) | In English |  | 
| ASC | Adorers of the Blood of Christ | In English | → Roman catholic church | 
| ASDAH | Association of Seventh-Day Adventist Historians | In English | → Associations → History
 | 
| ASI | Ancillae Secular Institute | In English | → Roman catholic church | 
| ASMI | Apostolic Sisters of Mary Immaculate | In English | → Roman catholic church | 
| ASMI | Assisi Sisters Of Mary Immaculate | In English | → Roman catholic church | 
| BA | (The) Biblical Archaeologist | In English | → Serial publications, periodicals → Archeology
 | 
| BASIC | Brothers And Sisters In Christ | In English |  | 
| BBSG | Blog Bible Study Group | In English | → Organizations and associations | 
| BCV | Bergumer Christelijke Voetbalclub | In Dutch | → Organizations and associations → Football and rugby
 | 
| BCVS | Bornese Christelijke Sport Vereniging | In Dutch | → Organizations and associations → Sport, physical exercises
 | 
| BOR | Biserica Ortodoxă Română | In Romanian |  | 
| BSG | Bibelgruppe für Studierende | In German | → Organizations and associations → Belgium
 | 
| CAB | Congregation of Alexian Brothers | In English | → Roman catholic church | 
| CARE | Corpus Architecturae Religiosae Europae | In Latin | → 93025 → History
 | 
| CBQ | Catholic Biblical Quarterly | In English | → Serial publications, periodicals → Roman catholic church
 | 
| CBS | Christliche Bekenntnisschule | In English |  | 
| CBZ | Christliches Begegnungszentrum | In German |  | 
| CCCB | Canadian Conference of Catholic Bishops = CECC | Conférence des Évêques Catholiques du Canada | In French
 
 | In English | → Organizations and associations → Roman catholic church
 → Canada
 | 
| CCIS | Conférence Canadienne des Instituts Séculiers = CCSI | Canadian Conference of Secular Institutes | In English
 
 | In French | → Organizations and associations → Canada
 | 
| CCSI | Canadian Conference of Secular Institutes = CCIS (look above)
 | In English | → Organizations and associations → Canada
 | 
| CCV | Carmelite Sisters of Charity of Vedruna | In English | → Roman catholic church | 
| CECC | Conférence des Évêques Catholiques du Canada = CCCB (look above)
 | In French | → Organizations and associations → Roman catholic church
 → Canada
 | 
| CEI | Chiesa Evangelica Italiana | In Italian | → Protestant churches → Italia
 | 
| CFIC | Congregation of the Sons of Immaculate Conception | In English | → Roman catholic church | 
| CFMN | Comunità dei Figli di Maria di Nazaret | In Italian | → Organizations and associations | 
| CFTC | Confédération Française des Travailleurs Chrétiens (www.cftc.fr) | In French | → Organizations and associations → Labour, labour economics
 → France
 | 
| CGB | Christlicher Gewerkschaftsbund | In German | → Organizations and associations → Labour, labour economics
 | 
| CH | Church History | In English | → History → Roman catholic church
 | 
| CHA | Catholic Health Association | In English | → Associations → Roman catholic church
 → Medicine
 | 
| CHF | Congregation of The Holy Family | In English | → Roman catholic church | 
| CIA | Centre International des Alliances | In French | → Organizations and associations | 
| CIELT | Centre International d'Études sur le Linceul de Turin | In French | → Organizations and associations → Roman catholic church
 | 
| CIIR | Catholic Institute for International Relations | In English | → Roman catholic church → International relations
 | 
| CJA | Christlich-Jüdische Arbeitsgemeinschaft Basel | In German | → Associations → Judaism
 | 
| CJP | Christlich-Jüdische Projekte | In German | → Judaism | 
| CJV | Christelijke Jongeren Vereniging | In Dutch | → Organizations and associations | 
| CJVV | Christelijke Jongelieden Voetbal Vereniging | In Dutch | → Organizations and associations → Football and rugby
 | 
| CLMC | Comunità Laici Missionari Cattolici | In Italian | → Organizations and associations → Roman catholic church
 | 
| CM | Congregation of the Mission | In English | → Roman catholic church | 
| CM | Carmelite Missionaries | In English | → Roman catholic church | 
| CM | Christelijke Mutualiteit (www.cm.be) | In Dutch | → Social welfare → Medicine
 → Belgium
 | 
| CMC | Congregation of The Mother Of Carmel | In English | → Roman catholic church | 
| CMF | Claretian Missionary Fathers | In English | → Roman catholic church | 
| CMI | Centro Misionero Iberoamericano | In Spanish |  | 
| CMI | Carmelites of Mary Immaculate | In English |  | 
| CMIS | Conférence Mondiale des Instituts Séculiers | In French |  | 
| CMSF | Congregation of the Missionaries of Saint Francis Sales | In English | → Roman catholic church | 
| CNS | Catholic News Service (www.catholicnews.com) | In English | → Newspapers, journalism → Roman catholic church
 | 
| CNV | Christelijke Noordwijkerhoutse Voetbalclub | In Dutch | → Organizations and associations → Football and rugby
 | 
| CNV | Christelijk Nationaal Vakverbond (www.cnv.nl) | In Dutch | → Organizations and associations → Labour, labour economics
 → Netherlands
 | 
| COB | Church of the Brethren | In English | → Protestant churches | 
| CoUCL | Contributions de l'Universite Catholique de Louvain | In French | → Serial publications, periodicals → Roman catholic church
 → Higher education, universities
 | 
| COV | Christelijke Ontspannings Vereniging | In Dutch | → Organizations and associations → Sport, physical exercises
 | 
| CR | Congregation of the Rosarians | In English | → Roman catholic church | 
| CSB | Christelijke Sportclub Baflo | In Dutch | → Organizations and associations → Sport, physical exercises
 | 
| CSC | Congregation of The Sisters Of Charity | In English | → Roman catholic church | 
| CSC | Confédération des Syndicats Chrétiens = ACV (look above)
 | In French | → Organizations and associations → Labour, labour economics
 | 
| CSCA | Christelijke Sport Club Actief | In Dutch | → Organizations and associations → Sport, physical exercises
 | 
| CSEL | Corpus Scriptorum Ecclesiasticorum Latinorum = CSEL | Corpus der lateinischen Kirchenväter | In German
 = CSEL | Corpus of the Latin Church Fathers | In English
 
 | In Latin | → Libraries → Roman catholic church
 | 
| CSEL | Corpus der lateinischen Kirchenväter =  (look above)
 | In German | → Libraries → Roman catholic church
 | 
| CSEL | Corpus of the Latin Church Fathers =  (look above)
 | In English | → Libraries → Roman catholic church
 | 
| CSIC | Centre for the Study of Islam and Christian-Muslim Relations | In English | → Islam | 
| CSN | Congregation of The Sisters Of Nazareth | In English | → Roman catholic church | 
| CSV | Christelijke Sport Vereniging | In Dutch | → Organizations and associations → Sport, physical exercises
 | 
| CSVC | Christelijke Sport Vereniging Coevorden | In Dutch | → Organizations and associations → Sport, physical exercises
 | 
| CSVD | Christelijke Sportclub Vitesse Delft | In Dutch | → Organizations and associations → Sport, physical exercises
 → Netherlands
 | 
| CSVH | Christelijke Sport Vereniging Hoogkerk | In Dutch | → Organizations and associations → Sport, physical exercises
 | 
| CVBVB | Christelijke Voetbal Vereniging Bedum | In Dutch | → Organizations and associations → Football and rugby
 | 
| CVM | Christian Veterinary Mission (www.cvmusa.org) | In English | → Organizations and associations → Veterinary medicine
 | 
| CVSB | Christelijke Voetbalvereniging Scheemder Boys | In Dutch | → Organizations and associations → Football and rugby
 | 
| CVVA | Christelijke Voetbal Vereniging Arnhem | In Dutch | → Organizations and associations → Football and rugby
 | 
| CVVO | Christelijke Vereniging Voor Ontspanning | In Dutch | → Organizations and associations → Sport, physical exercises
 | 
| CVW | Christelijke Voetbalclub Winschoten | In Dutch | → Organizations and associations → Football and rugby
 | 
| CWL | Catholic Women's League of Canada (www.cwl.ab.ca) | In English | → Organizations and associations → Roman catholic church
 → Canada
 | 
| DBLA | Don Bosco Lay Association | In English | → Associations → Roman catholic church
 | 
| DC | Disciples of Christ | In English | → Roman catholic church | 
| DCPB | Daughters of Charity of the Most Precious Blood | In English | → Roman catholic church | 
| DCTB | Deutscher Christlicher Techniker-Bund (www.dctb.de) | In German | → Organizations and associations → Labour, labour economics
 → Germany
 | 
| DDP | Daughters of Divine Providence | In English | → Roman catholic church | 
| DML | Daughters of Saint Mary of Leuca | In English | → Roman catholic church | 
| DP | Society of Devapriya Sisters | In English | → Roman catholic church | 
| DPM | Daughters of Presentation of Mary in the Temple | In English | → Roman catholic church | 
| DSC | Daughters of Saint Camillus | In English | → Roman catholic church | 
| DSFS | Daughters of Saint Francis de Sales | In English | → Roman catholic church | 
| DSHJ | Daughters of the Sacred Heart of Jesus | In English | → Roman catholic church | 
| DSHJ | Daughters of Sacred Heart of Jesus | In English | → Roman catholic church | 
| DSJ | Daughters of Saint Joseph | In English | → Roman catholic church | 
| DST | Daughters of Saint Thomas | In English | → Roman catholic church | 
| ÉAPP | Équipe d'Animation Pastorale des Paroisses | In French |  | 
| ECSR | Enabling Christians in Serving Refugees | In English | → Migrations | 
| EO | Evangelische Omroep | In Dutch | → Protestant churches | 
| ERTS | Evangelische Radio en Televisie Stichting | In Dutch | → Foundations → Telecommunications
 → Protestant churches
 | 
| EURD | Église Universelle du Royaume de Dieu = IURD | Iglesia Universal del Reino de Dios | In Spanish
 = IURD | Igreja Universal do Reino de Deus | In Portuguese
 = UCKG | Universal Church of the Kingdom of God | In English
 
 | In French | → Modern spiritual movements | 
| EVP | Evangelische Volkspartei (www.evppev.ch) = PEV | Parti Évangélique | In French
 
 | In German | → Political parties and movements → Switzerland
 | 
| EvQ | Evangelical Quarterly | In English | → Serial publications, periodicals | 
| FCC | Franciscan Clarist Congregation | In English | → Roman catholic church | 
| FDSHJ | Fervent Daughters of the Saint Heart of Jesus | In English | → Roman catholic church | 
| FEO | Federatie Evangelische Zorg-Organisaties (www.feozorg.nl) | In Dutch | → Organizations and associations → Protestant churches
 → Social aid
 → Netherlands
 | 
| FEREDE | Federación de Entidades Religiosas Evangélicas de España | In Spanish | → Organizations and associations | 
| FFRC | Fédération Française des Radios Chrétiennes | In French | → Organizations and associations → Telecommunications
 → France
 | 
| FHGS | Franciscan Handmaids of the Good Shepherd | In English | → Roman catholic church | 
| FJCT | Federatie Christelijk Jeugdwurk Tytsjerksteradiel | In Dutch | → Organizations and associations | 
| FMC | Franciscan Missionaries of Saint Clare | In English | → Roman catholic church | 
| FMM | Franciscan Missionaries of Mary | In English | → Roman catholic church | 
| FRTC | Fédération des Radios et Télévisions Chrétiennes | In French | → Organizations and associations → Telecommunications
 | 
| FSAS | Franciscan Sisters of All Saints | In English | → Roman catholic church | 
| FSHA | Franciscan Sisters of Holy Annunciation | In English | → Roman catholic church | 
| FSMA | Franciscan Sisters of Mary of Angels | In English | → Roman catholic church | 
| FSSE | Franciscan Sisters of Saint Elizabeth | In English | → Roman catholic church | 
| FSSH | Franciscan Sisters of Sacred Heart | In English | → Roman catholic church | 
| FSSJ | Franciscan Sisters of Saint Joseph | In English | → Roman catholic church | 
| GAFCON | Global Anglican Future Conference (https://www.gafcon.org) | In English | → Organizations and associations → Protestant churches
 | 
| GCSV | Groningse Christelijke Sport Vereniging | In Dutch | → Organizations and associations → Sport, physical exercises
 | 
| GIRM | General Instruction of the Roman Missal | In English | → Roman catholic church | 
| HCAC | Hindu-Christian Studies Academic Discussion List | In English | → Indian religions | 
| HCSC | Helderse Christelijke Sport Centrale | In Dutch | → Organizations and associations → Sport, physical exercises
 | 
| HM | Handmaids of Mary | In English | → Roman catholic church | 
| HS | Hospitalar Sisters of Mercy | In English | → Roman catholic church | 
| HSSC | Holy Spirit Study Centre | In English |  | 
| IABO | Internacia Asocio de Bibliistoj kaj Orientalismoj | In Esperanto | → Associations | 
| IAPS | International Association of Patristics Studies = AIEP (look above)
 | In English | → Associations → Archeology
 → Roman catholic church
 | 
| ICAM | Institut Catholique d'Arts et Métiers | In French | → Roman catholic church → Specialized or polytechnical colleges
 → Engineering, technology
 | 
| ICF | International Christian Fellowship | In English | → Organizations and associations | 
| ICP | Institut Catholique de Paris (www.icp.fr) | In French | → Education → Roman catholic church
 → France
 | 
| ICP | Instituto Cristão de Pesquisas | In Portuguese |  | 
| ICT | Institut Catholique de Toulouse (www.ict-toulouse.asso.fr) | In French | → Higher education, universities → Roman catholic church
 → France
 | 
| IDÉO | Institut Dominicain d'Études Orientales du Caire (https://www.ideo-cairo.org/fr/) | In French | → Research institutes → Roman catholic church
 → Area studies
 → Islam
 → Egypt
 | 
| IEEkQ | Institut zur Erforschung und Erschließung kirchlicher Quellen | In German | → Roman catholic church | 
| IKUE | Internacia Katolika Unuigo Esperantista | In Esperanto | → Organizations and associations → Roman catholic church
 → Artificial languages (linguistics)
 | 
| IMS | Indian Missionary Society | In English | → Roman catholic church | 
| INRI | Iesus Nazarenus Rex Iudaeorum | In Latin |  | 
| IOSCS | International Organization for Septuagint and Cognate Studies | In English | → Organizations and associations → Judaism
 | 
| ITMI | In Touch Mission International | In English | → Organizations and associations | 
| IURD | Iglesia Universal del Reino de Dios = EURD, UCKG (look above)
 | In Spanish | → Modern spiritual movements | 
| IURD | Igreja Universal do Reino de Deus = EURD, UCKG (look above)
 | In Portuguese | → Modern spiritual movements | 
| IVI | Invitation à la vie | In French | → Modern spiritual movements | 
| JHG | Johanniter-Hilfsgemeinschaft | In German | → Organizations and associations → Protestant churches
 | 
| JHM | John Hagee Ministries | In English |  | 
| JMJ | Journées Mondiales de la Jeunesse | In French | → Roman catholic church | 
| JPS | Jonge Protestanten die Samenwerken | In Dutch | → Organizations and associations → Protestant churches
 | 
| JS | Josephine Sisters | In English | → Roman catholic church | 
| JSNT | Journal for the Study of the New Testament | In English | → Serial publications, periodicals | 
| KA | Kirkelig arbeidsgiver- og interesseorganisasjon | In Norwegian | → Organizations and associations → Labour, labour economics
 | 
| KAAD | Katholischer Akademischer Ausländer-Dienst | In German | → Roman catholic church | 
| KADOC | Katholiek Documentatie- en Onderzoek Centrum (http://kadoc.kuleuven.be) | In Dutch | → Documentation → Roman catholic church
 → Belgium
 | 
| KAJ | Katholieke Arbeidersjeugd | In Dutch | → Organizations and associations → Labour, labour economics
 → Roman catholic church
 | 
| KAÖ | Katholische Aktion Österreich (www.kaoe.at) | In German | → Organizations and associations → Roman catholic church
 → Austria
 | 
| KAV | Kristelijke Arbeidersvrouwenbeweging | In Dutch | → Organizations and associations → Labour, labour economics
 | 
| KDSE | Katholische Deutsche Studenten-Einigung | In English | → Organizations and associations → Higher education, universities
 → Roman catholic church
 → Germany
 | 
| KELI | Kristana Esperantista Ligo Internacia | In Esperanto | → Organizations and associations → Artificial languages (linguistics)
 | 
| KHLim | Katholieke Hogeschool Limburg | In Dutch | → Education → Roman catholic church
 | 
| KKES | Kvakera Esperanto-Servo | In Esperanto | → Artificial languages (linguistics) | 
| KM | Kirchliche Monatschrift | In German | → Serial publications, periodicals | 
| KOSC | Katholieke Ootmarsumer Sport Club | In Dutch | → Organizations and associations → Sport, physical exercises
 → Roman catholic church
 → Netherlands
 | 
| KRVC | Katholieke Rijswijkse Voetbal Club | In Dutch | → Organizations and associations → Football and rugby
 → Roman catholic church
 → Netherlands
 | 
| KSCV | Katholieke Sport Club Vasse | In Dutch | → Organizations and associations → Sport, physical exercises
 → Roman catholic church
 → Netherlands
 | 
| KSH | Katholiek Sportleven Harreveld | In Dutch | → Organizations and associations → Sport, physical exercises
 → Roman catholic church
 → Netherlands
 | 
| KSÖ | Katholische Sozialakademie Österreichs (www.ksoe.at) | In German | → Academies → Roman catholic church
 → Austria
 | 
| KUB | Katholieke Universiteit Brabant | In Dutch | → Higher education, universities → Roman catholic church
 | 
| KUL | Katholieke Universiteit Leuven | In Dutch | → Higher education, universities → Roman catholic church
 | 
| KUL | Katolicki Uniwersytet Lubelski | In Polish | → Higher education, universities → Roman catholic church
 | 
| KULAK | Katholieke Universiteit Leuven Afdeling Kortrijk (www.kuleuven-kortrijk.be) | In Dutch | → Higher education, universities → Roman catholic church
 → Belgium
 | 
| KVP | Katholieke Volkspartij | In Dutch | → Political parties and movements → Roman catholic church
 | 
| KVVA | Katholieke Voetbal Vereniging Amersfoort | In Dutch | → Organizations and associations → Football and rugby
 → Roman catholic church
 → Netherlands
 | 
| LAR | Little Apostles of Redemption | In English | → Roman catholic church | 
| LB | Londona Biblio | In Esperanto | → United Kingdom | 
| LCGB | Lëtzebuerger Chrëschtleche Gewerkschaftsbond | In Letzeburgesh | → Organizations and associations → Labour, labour economics
 | 
| LCMS | The Lutheran Church - Missouri Synod (www.lcms.org) | In English | → Protestant churches → United States
 | 
| LDFX | Little Daughters of Saint Francis Xavier | In English | → Roman catholic church | 
| LDSJG | Little Daughters of Saint John Gaulbert | In English | → Roman catholic church | 
| LSC | Little Sisters of Christ | In English | → Roman catholic church | 
| LSDP | Little Sisters of Divine Providence | In English | → Roman catholic church | 
| LSMS | Little Sisters of Mother of Sorrows | In English | → Roman catholic church | 
| LWSH | Little Workers of the Sacred Hearts | In English | → Roman catholic church | 
| MAC | Movimento Apostolico Ciechi | In Italian | → Organizations and associations | 
| MC | Missionaries of Charity | In English | → Roman catholic church | 
| MCBS | Missionary Congregation for the Blessed Sacrament | In English |  | 
| MCC | Maria Congregatie Club | In Dutch | → Organizations and associations → Sport, physical exercises
 | 
| MCCI | Missionarii Comboniani Cordis Iesu | In Latin | → Roman catholic church | 
| MEJ | Mouvement Eucharistique des Jeunes = MEJ | Movimiento Eucaristico Juvenil | In Spanish
 
 | In French | → Organizations and associations |