| Acronym | Sense | Language | Topics | 
| FEREDE | Federación de Entidades Religiosas Evangélicas de España | In Spanish | → Organizations and associations → Christianity
 | 
| FFRC | Fédération Française des Radios Chrétiennes | In French | → Organizations and associations → Telecommunications
 → Christianity
 → France
 | 
| FHGS | Franciscan Handmaids of the Good Shepherd | In English | → Roman catholic church | 
| FIA | Front islamique arabe de l'Azawad | In French | → Political parties and movements → Islam
 → Africa
 | 
| FJCT | Federatie Christelijk Jeugdwurk Tytsjerksteradiel | In Dutch | → Organizations and associations → Christianity
 | 
| 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
 → Christianity
 | 
| 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 | 
| FSPRT | Fichier pour la Prévention de la Radicalisation à Caractère Terroriste | In French | → Databases → Police
 → Criminal law
 → Islam
 | 
| 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 | 
| FWBO | Friends of the Western Buddhist Order | In English | → Buddhism → Modern spiritual movements
 | 
| FZPhTh | Freiburger Zeitschrift für Philosophie und Theologie | In German | → Serial publications, periodicals → Philosophy, psychology
 | 
| 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
 → Christianity
 | 
| GIA | Groupe Islamique Armé | In French | → Islam → Political parties and movements
 | 
| GIRM | General Instruction of the Roman Missal | In English | → Roman catholic church | 
| GSPC | Groupe Salafiste pour la Prédication et le Combat | In French | → Islam → Political parties and movements
 | 
| HAR | Hebrew Annual Review | In English | → Serial publications, periodicals → Judaism
 | 
| HBT | Horizons in Biblical Theology | In English | → Serial publications, periodicals | 
| HCAC | Hindu-Christian Studies Academic Discussion List | In English | → Indian religions → Christianity
 | 
| HCSC | Helderse Christelijke Sport Centrale | In Dutch | → Organizations and associations → Sport, physical exercises
 → Christianity
 | 
| HIFIP | Harvard Islamic Finance Information Program | In English | → Islam → Finance
 | 
| HIRIJW | Hadassah International Research Institute on Jewish Women | In English | → Research institutes → Judaism
 → Social sciences
 | 
| 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 | → Christianity | 
| HThR | Harvard Theological Review | In English | → Serial publications, periodicals | 
| HTR | Harvard Theological Review | In English | → Serial publications, periodicals | 
| HUCA | Hebrew Union College Annual | In English | → Serial publications, periodicals → Judaism
 | 
| IAAO | Islamic Arts and Architecture Organization (www.islamicart.com) | In English | → Organizations and associations → Islam
 → Arts
 | 
| IABO | Internacia Asocio de Bibliistoj kaj Orientalismoj | In Esperanto | → Associations → Christianity
 | 
| IABS | International Association of Buddhist Studies | In English | → Associations → Buddhism
 | 
| IAIS | Institute of Arab and Islamic Studies | In English | → Islam → Language, linguistics, literature
 → Geography, biography, history
 | 
| IAN | Islamic Arts Network | In English | → Islam → Arts
 | 
| IAPS | International Association of Patristics Studies = AIEP | Association Internationale des Études Patristiques | In French
 
 | In English | → Associations → Archeology
 → Roman catholic church
 | 
| IAS | International Association of Sufism | In English | → Associations → Islam
 | 
| IAS | Islamic Academy of Sciences | In English | → Academies → Islam
 → Mathematics and natural sciences
 | 
| IC | Islamic Culture | In English | → Islam → Civilization, culture, progress
 → Linguistics
 → Literature
 | 
| 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 → Christianity
 | 
| ICP | Institut Catholique de Paris (www.icp.fr) | In French | → Education → Roman catholic church
 → France
 | 
| ICP | Instituto Cristão de Pesquisas | In Portuguese | → Christianity | 
| ICT | Institut Catholique de Toulouse (www.ict-toulouse.asso.fr) | In French | → Higher education, universities → Roman catholic church
 → France
 | 
| IDB | (The) Interpreter's Dictionary of the Bible | In English |  | 
| 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 | 
| IEJ | Israel Exploration Journal | In English | → Serial publications, periodicals → Judaism
 | 
| IERP | Institut d'Études Religieuses et Pastorales | In French |  | 
| IGGoÖ | Islamische Glaubensgemeinschaft in Österreich (www.derislam.at) | In German | → Organizations and associations → Islam
 → Austria
 | 
| IHV | Islamische Hochschulvereinigung | In German | → Organizations and associations → Higher education, universities
 → Islam
 | 
| IISAR | International Institute of Islamic Studies and Research | In English | → Islam | 
| IIU | International Islamic University | In English | → Islam → Higher education, universities
 | 
| IIUM | International Islamic University Malaysia | In English | → Islam → Higher education, universities
 | 
| IJJS | International Journal of Jaina Studies | In English | → Serial publications, periodicals → Indian religions
 | 
| IJTS | International Journal of Tantric Studies | In English | → Serial publications, periodicals → Indian religions
 | 
| IKUE | Internacia Katolika Unuigo Esperantista | In Esperanto | → Organizations and associations → Roman catholic church
 → Artificial languages (linguistics)
 | 
| ILSP | Islamic Legal Studies Program | In English | → Islam → Law, jurisprudence
 | 
| IMEIS | Institute for Middle Eastern and Islamic Studies | In English | → Islam → Area studies
 | 
| IMS | Indian Missionary Society | In English | → Roman catholic church | 
| INRI | Iesus Nazarenus Rex Iudaeorum | In Latin | → Christianity | 
| IOSCS | International Organization for Septuagint and Cognate Studies | In English | → Organizations and associations → Judaism
 → Christianity
 | 
| IPB | Institut Pierre Becker | In French | → Modern spiritual movements | 
| IPSI | Islamic Propagation Society International | In English | → Organizations and associations → Islam
 | 
| IRAS | Interreligiöse Arbeitsgemeinschaft in der Schweiz | In German | → Associations → Switzerland
 | 
| IRCICA | Research Centre for Islamic History, Art and Culture | In English | → Research institutes → Islam
 → Arts
 → History
 → Civilization, culture, progress
 | 
| IRF | Interreligiöses Forum Basel | In German |  | 
| IRI | Islamic Research Institute | In English | → Research institutes → Islam
 | 
| IRIZ | International Research Institute for Zen Buddhism (http://iriz.hanazono.ac.jp) | In English | → Research institutes → Buddhism
 → Japan
 | 
| ISIM | International Institute for the Study of Islam in the Modern World | In English | → Islam | 
| ISKCON | International Society for Krishna Consciousness = AICK | Association Internationale pour la Conscience de Krishna | In French
 
 | In English | → Associations → Indian religions
 → Modern spiritual movements
 | 
| ISRA | Islamic Research Academy | In English | → Academies → Islam
 | 
| ITI | Internationales Theologisches Institut | In German |  | 
| ITMI | In Touch Mission International | In English | → Organizations and associations → Christianity
 | 
| IURD | Iglesia Universal del Reino de Dios = EURD | Église Universelle du Royaume de Dieu | In French
 = IURD | Igreja Universal do Reino de Deus | In Portuguese
 = UCKG | Universal Church of the Kingdom of God | In English
 
 | In Spanish | → Christianity → Modern spiritual movements
 | 
| IURD | Igreja Universal do Reino de Deus = EURD, UCKG (look above)
 | In Portuguese | → Christianity → Modern spiritual movements
 | 
| IVI | Invitation à la vie | In French | → Christianity → Modern spiritual movements
 | 
| IYS | Igud Yotzei Sin | In Chinese | → Organizations and associations → Judaism
 | 
| JAIS | Journal of Arabic and Islamic Studies | In English | → Serial publications, periodicals → Islam
 → Area studies
 | 
| JBE | Journal of Buddhist Ethics | In English | → Serial publications, periodicals → Ethics
 → Buddhism
 | 
| JBL | Journal of Biblical Literature | In English | → Serial publications, periodicals → Literature
 | 
| JBLE | Japana Budhana Ligo Esperantista | In Esperanto | → Organizations and associations → Buddhism
 → Artificial languages (linguistics)
 | 
| JCC | Jewish Community Center | In English | → Organizations and associations → Judaism
 | 
| JCR | Journal of Chinese Religions | In English | → Serial publications, periodicals → China
 | 
| JFW | Jüdische Filmwoche | In German | → Cinema, movies → Judaism
 | 
| JGH | Jewish General Hospital (www.jgh.ca) | In English | → Medicine → Judaism
 → Canada
 | 
| JHG | Johanniter-Hilfsgemeinschaft | In German | → Organizations and associations → Protestant churches
 | 
| JHM | John Hagee Ministries | In English | → Christianity | 
| JIABS | Journal of the International Association of Buddhist Studies | In English | → Serial publications, periodicals → Buddhism
 | 
| JIE | Jewish Inscriptions of Graeco-Roman Egypt | In English | → Judaism → Archeology
 | 
| JIJS | Journal of Islamic Jerusalem Studies | In English | → Serial publications, periodicals → Islam
 | 
| JIS | Journal of Islamic Studies | In English | → Serial publications, periodicals → Islam
 | 
| JIWE | Jewish Inscriptions of Western Europe | In English | → Judaism | 
| JJS | Journal of Jewish Studies | In English | → Serial publications, periodicals → Judaism
 | 
| JMJ | Journées Mondiales de la Jeunesse | In French | → Roman catholic church | 
| JMM | Journée Missionnaire Mondiale | In French |  | 
| JNUL | Jewish National and University Library | In English | → Libraries → Judaism
 → Higher education, universities
 | 
| JPS | Jonge Protestanten die Samenwerken | In Dutch | → Organizations and associations → Protestant churches
 | 
| JQR | Jewish Quarterly Review | In English | → Serial publications, periodicals → Judaism
 | 
| JS | Josephine Sisters | In English | → Roman catholic church | 
| JSGRP | Jewish Studies in the Graeco-Roman Period | In English | → Education → Judaism
 → Language, linguistics, literature
 → History
 | 
| JSGRP | Jewish Symbols in the Greco-Roman Period | In English | → Judaism → Archeology
 | 
| JSJ | Journal for the Study of Judaism in the Persian, Hellenistic and Roman Period | In English | → Serial publications, periodicals → Archeology
 → Judaism
 | 
| JSNT | Journal for the Study of the New Testament | In English | → Serial publications, periodicals → Christianity
 | 
| JThS | Journal of Theological Studies | In English | → Serial publications, periodicals | 
| JTS | Journal of Theological Studies | In English | → Serial publications, periodicals | 
| KA | Kirkelig arbeidsgiver- og interesseorganisasjon | In Norwegian | → Organizations and associations → Labour, labour economics
 → Christianity
 | 
| 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
 → Christianity
 | 
| 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 → Christianity
 → Artificial languages (linguistics)
 | 
| KHLim | Katholieke Hogeschool Limburg | In Dutch | → Education → Roman catholic church
 | 
| KI | Kontaktgruppe Israel | In German |  | 
| KKES | Kvakera Esperanto-Servo | In Esperanto | → Christianity → Artificial languages (linguistics)
 | 
| KM | Kirchliche Monatschrift | In German | → Serial publications, periodicals → Christianity
 | 
| 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 | → Christianity → United Kingdom
 | 
| LBI | Leo Baeck Institute (https://www.lbi.org) | In English | → Research institutes → Libraries
 → History
 → Judaism
 | 
| LCGB | Lëtzebuerger Chrëschtleche Gewerkschaftsbond | In Letzeburgesh | → Organizations and associations → Christianity
 → 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 | 
| LIMC | Lexicon Iconographicum Mythologiae Classicae | In Latin | → Encyclopaedias, reference works → Language, linguistics, literature
 | 
| 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 → Christianity
 | 
| MC | Missionaries of Charity | In English | → Roman catholic church | 
| MCBS | Missionary Congregation for the Blessed Sacrament | In English | → Christianity | 
| MCC | Ministerul Culturii şi Cultelor | In Romanian | → Central administration → Civilization, culture, progress
 | 
| MCC | Maria Congregatie Club | In Dutch | → Organizations and associations → Sport, physical exercises
 → Christianity
 | 
| MCCI | Missionarii Comboniani Cordis Iesu | In Latin | → Roman catholic church | 
| MEISP | Middle Eastern and Islamic Studies Program | In English | → Islam → Area studies
 | 
| MEJ | Mouvement Eucharistique des Jeunes = MEJ | Movimiento Eucaristico Juvenil | In Spanish
 
 | In French | → Organizations and associations → Christianity
 | 
| MEJ | Movimiento Eucaristico Juvenil =  (look above)
 | In Spanish | → Organizations and associations → Christianity
 | 
| MGWJ | Monatsschrift für Geschichte und Wissenschaft des Judentums | In German | → Serial publications, periodicals → Language, linguistics, literature
 → Geography, biography, history
 → Judaism
 | 
| MHA | Mormon History Association | In English | → Associations → Christianity
 → History
 | 
| MIDÉO | Mélanges de l'Institut Dominicain d'Études Orientales du Caire | In French | → Serial publications, periodicals → Roman catholic church
 → Area studies
 → Islam
 → Egypt
 | 
| MILS | Mission Interministérielle pour la Lutte contre les Sectes | In French | → Central administration | 
| MIVILUDES | Mission interministérielle de vigilance et de lutte contre les dérives sectaires | In French | → Central administration | 
| MJS | Mouvement de Jeunesse Sioniste | In French | → Organizations and associations → Judaism
 | 
| MLF | Missionaries of Little Flower | In English | → Roman catholic church | 
| MMB | Malabar Missionary Brothers | In English | → Christianity | 
| MMI | Missionaries of Mary Immaculate | In English | → Roman catholic church | 
| MMIL | Mouvement Missionnaire Intérieur Laïque | In French | → Modern spiritual movements | 
| MMM | Missionaries of Mary Mediatrix | In English | → Roman catholic church | 
| MMS | Medical Mission Sisters | In English | → Roman catholic church → Medicine
 | 
| MNTV | Montre-Nous Ton Visage | In English | → Organizations and associations → Roman catholic church
 | 
| MPAC | Muslim Public Affairs Council | In English | → Islam → Public administration, government
 | 
| MPAJ | Muslim Public Affairs Journal | In English | → Serial publications, periodicals → Islam
 → Public administration, government
 | 
| MPH | Mennonite Publishing House (www.mph.org) | In English | → Modern spiritual movements → Graphic industries, printing, publishing
 | 
| MPH | Methodist Publishing House (www.mph.org.uk) | In English | → Graphic industries, printing, publishing → Protestant churches
 → United Kingdom
 | 
| MS | Missionaries of Charity | In English | → Roman catholic church | 
| MSA | Missionary Sisters of Ajmeer | In English | → Roman catholic church | 
| MSI | Missionary Sisters of Immaculate | In English | → Roman catholic church | 
| MSJ | Medical Sisters of Saint Joseph | In English | → Roman catholic church → Medicine
 | 
| MSLC | Miscellanea di Studi di Letteratura Cristiana | In Italian | → Serial publications, periodicals → Christianity
 → Linguistics
 | 
| MSMI | Missionary Sisters of Mary Immaculate | In English | → Roman catholic church | 
| MW | (The) Muslim World | In English | → Islam → Area studies
 | 
| NCRV | Nederlandse Christelijke Radio-Vereniging | In Dutch | → Organizations and associations → Telecommunications
 → Christianity
 → Netherlands
 | 
| NDIEC | New Documents Illustrating Early Christianity | In English | → Christianity → Archeology
 | 
| NedTTs | Nederlands Theologisch Tijdschrift | In Dutch | → Serial publications, periodicals → Netherlands
 | 
| NETS | New English Translation of the Septuagint | In English | → Judaism → Christianity
 → Translation
 | 
| NKJV | New King James Version | In English | → Christianity | 
| NL | Christelijk Nationaal Vakverbond | In Dutch | → Organizations and associations → Labour, labour economics
 → Christianity
 | 
| NMR | Nouveau Mouvement Religieux = NRM | New Religious Movement | In English
 = NRB | Nieuwe Religieuze Beweging | In Dutch
 = NRJ | Naujieji religiniai judėjimai | In Lithuanian
 
 | In French | → Modern spiritual movements | 
| NovT | Novum Testamentum | In Latin |  | 
| NRB | Nieuwe Religieuze Beweging = NMR, NRM, NRJ (look above)
 | In Dutch | → Modern spiritual movements | 
| NRJ | Naujieji religiniai judėjimai = NMR, NRM, NRB (look above)
 | In Lithuanian | → Modern spiritual movements | 
| NRM | New Religious Movement = NMR, NRB, NRJ (look above)
 | In English | → Modern spiritual movements | 
| NS | Nazareth Sisters | In English | → Roman catholic church | 
| NT | Novum Testamentum | In Latin | → Serial publications, periodicals → Christianity
 | 
| NTS | New Testament Studies | In English |  | 
| NU | Nahdatul Ulama = NU | نهضة العلماء | In Arabic
 
 | In Arabic | → Islam | 
| NU | نهضة العلماء =  (look above)
 | In Arabic | → Islam | 
| ÖBR | Österreichische Buddhistische Religionsgesellschaft (www.buddhismus-austria.at) | In German | → Organizations and associations → Buddhism
 → Austria
 | 
| OC | Oriens Christianus | In Latin | → Serial publications, periodicals → Christianity
 | 
| OCD | Order of Discalced Carmelites | In English | → Roman catholic church | 
| OFFL | Odd-Fellows Frauen Loge | In German |  | 
| OFM | Ordo Fratrum Minorum | In Latin | → Organizations and associations → Christianity
 | 
| OIC | Organization of the Islamic Conference | In English | → Organizations and associations → Islam
 → International relations
 |