| AGP | Accelerated Graphics Port | In English | → Graphical processing → Image processing |
| AGPB | Association Générale des Producteurs de Blé | In French | → Organizations and associations → Agricultural sciences |
| AGPh | Archiv für Geschichte der Philosophie | In German | → Serial publications, periodicals → Philosophy, psychology → History |
| AGPM | Association Générale des Producteurs de Maïs | In French | → Organizations and associations → Agricultural sciences |
| AGR | Association pour une Gauche Républicaine | In French | → Associations → Political parties and movements |
| AGROBIO | Associaçao Portuguesa de Agricultura Biológica | In Portuguese | → Organizations and associations → Agricultural sciences |
| AGRR | Association Générale de Retraites par Répartition | In French | → Organizations and associations → Labour, labour economics |
| AGRR | Association Généalogique de Relevés et de Recherches | In French | → Associations → Genealogy |
| AGRR | Association Générale de Retraite par Répartition | In French | → Associations → Labour, labour economics → Insurance |
| AGS | Amsterdamse Grafische Sportvereniging | In Dutch | → Organizations and associations → Sport, physical exercises |
| AGSV | Aartswoudse Gouwse Sport Vereniging | In Dutch | → Organizations and associations → Sport, physical exercises |
| AGTCM | Arbeitsgemeinschaft für Klassische Akupunktur und Traditionelle Chinesische Medizin | In German | → Associations → Medicine |
| AGTS | Asociación Gremial de Traductores de Santiago (www.traductores-agts.cl) | In Spanish | → Associations → Linguistics |
| AGTS | Assemblies of God Theological Seminary (www.agts.edu) | In English | → Organizations and associations → Social sciences |
| AGTS | Australasian Gene Therapy Society (www.agts.org.au) | In English | → Organizations and associations → Biotechnology → Medicine |
| AGU | Address Generation Unit | In English | → Computer science |
| AGU3L | Association Grufféenne des Utilisateurs de Linux et des Logiciels Libres | In French | → Associations → Software → Operating systems |
| AGUFM | American Geophysical Union Fall Meeting Abstracts | In English | → Serial publications, periodicals → Geophysics |
| AGUSM | American Geophysical Union Spring Meeting Abstracts | In English | → Serial publications, periodicals → Geophysics |
| AGVV | Amsterdamsche Gymnastiek & Voetbal Vereeniging | In Dutch | → Organizations and associations → Sport, physical exercises → Football and rugby |
| AH | Almere Huizen | In Dutch | → Organizations and associations → Sport, physical exercises |
| AH | Art History | In English | → Serial publications, periodicals → Arts → History |
| AHA | American Historical Association | In English | → Associations → History |
| AHA | Accelerated Hub Architecture | In English | → Networks, communication |
| AHES | Archive for History of Exact Sciences | In English | → Serial publications, periodicals → Mathematics and natural sciences → History |
| AHICF | Association pour l'Histoire des Chemins de Fer en France | In French | → Organizations and associations → Transport and postal services → History |
| AHILA | Association for Health Information and Libraries in Africa = AIBSA | Association pour l'Information et les Bibliothèques de Santé en Afrique | In French |
In English | → Libraries → Associations → Medicine |
| AHR | American Historical Review | In English | → Serial publications, periodicals → History |
| AHS | Agricultural History Society | In English | → Organizations and associations → Agricultural sciences → History |
| AHS | Association for Humanist Sociology | In English | → Associations → Sociology |
| AHSJ | American Helicopter Society Journal | In English | → Serial publications, periodicals → Aeronautics, aircraft |
| AHT | Ahtaus- ja Huolinta-alan Tekniset | In Finnish | → Organizations and associations |
| AHTS | Arbejdsgiverforeningen for Handel, Transport og Service | In Danish | → Organizations and associations → Trade → Transport and postal services → 33846 |
| AHW | Akkadisches Handwörterbuch | In German | → Dictionaries → Linguistics |
| AI | Artificial Intelligence = AI | Artificiële Intelligentie | In Dutch = KI | Kunstmatige Intelligentie | In Dutch = VI | Vještačka inteligencija | In Bosnian = IA | Intelligència artificial | In Catalan = KI | Künstliche Intelligenz | In German = AI | Artefarita Inteligenteco | In Esperanto = IA | Intelligence Artificielle | In French |
In English | → Artificial intelligence |
| AI | Artefarita Inteligenteco = KI, VI, IA (look above) |
In Esperanto | → Artificial intelligence |
| AI | Artificiële Intelligentie = KI, VI, IA (look above) |
In Dutch | → Artificial intelligence |
| AI*IA | Associazione Italiana per l'Intelligenza Artificiale | In Italian | → Associations → Artificial intelligence |
| AI-IA | Associazione Italiana per l'Intelligenza Artificiale | In Italian | → Associations → Artificial intelligence |
| AI3L | Association Ivoirienne pour Linux et les Logiciels Libres | In French | → Associations → Operating systems |
| AIA | Aircraft Industries Association (www.aia-aerospace.org) | In English | → Organizations and associations → Aeronautics, aircraft |
| AIA | Association for Industrial Archaeology (www.industrial-archaeology.org.uk) | In English | → Associations → Industry, industrial policy → Archeology |
| AIAAJ | American Institute of Aeronautics and Astronautics Journal | In English | → Serial publications, periodicals → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| AIABDS | Association des Imprimeries Africaines de Billets de Banque et de Documents de Sécurité | In French | → Organizations and associations → Financial markets → Transport and postal services |
| AIACE | Associazione Italiana Amici del Cinema d'Essai | In Italian | → Associations → Cinema, movies |
| AIAr | Associazione Italiana di Archeometria | In Italian | → Associations → Archeology |
| AIASJ | American Institute of Aeronautics and Astronautics Student Journal | In English | → Serial publications, periodicals → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| AIBI | Associazione Amici dei Bambini | In Italian | → Associations |
| AIBSA | Association pour l'Information et les Bibliothèques de Santé en Afrique = AHILA (look above) |
In French | → Libraries → Associations → Medicine |
| aiBSKV | Attila İlhan Bilim Sanat Kültür Vakfı | In Turkish | → Foundations |
| AIC | Associazione Italiana Autori della Fotografia Cinematografica (www.aicine.com) | In Italian | → Associations → Cinema, movies |
| AIC | Application Integration Components | In English | → Computer science |
| AICA | Associazione per Iniziative Cinematografiche e Audiovisive | In Italian | → Associations → Cinema, movies |
| AICAS | Asociación Ibérica de Cuidadores de Animales Salvajes | In Spanish | → Associations → Agricultural sciences |
| AICCF | Association Internationale des Congrès des Chemins de Fer | In French | → Associations → Higher education, universities → Rail transport engineering → 65 |
| AICF | Associazione Culturale Italo-Francese | In Italian | → Associations → Civilization, culture, progress |
| AICOS | Associazione per gli Interventi di Cooperazione allo Sviluppo | In Italian | → Associations → Development |
| AICSP | Analog Integrated Circuits and Signal Processing | In English | → Serial publications, periodicals → Electronics |
| AICU | Association pour l'Information et la Communication Urbaine | In French | → Organizations and associations |
| AID | Association Internationale de Développement (www.worldbank.org/ida/) = IDA | International Development Association | In English = AIF | Asociación Internacional de Fomento | In Spanish = AID | Associação Internacional de Desenvolvimento | In Portuguese = МАР | Международная ассоциация развития | In Russian = MAP | Міжнародна асоціація розвитку | In Serbian |
In French | → Associations → Development |
| AID | Associação Internacional de Desenvolvimento (www.worldbank.org/ida/) = IDA, AIF, МАР, MAP (look above) |
In Portuguese | → Associations → Development |
| AIDA | Associazione Italiana per la Documentazione Avanzata (www.aidaweb.it) | In Italian | → Libraries → Associations |
| AIDAA | Association Internationale des Auteurs de l'Audiovisuel | In French | → Associations → Cinema, movies |
| AIDAC | Associazione Dialoghisti Adattatori Cine-televisivi (www.aidac.it) | In Italian | → Associations → Telecommunications → Cinema, movies |
| AIDAMA | Associazione Italiana Autori Multivisione Artistica (www.aidama.it) | In Italian | → Associations |
| AIDOS | Associazione Italiana Donne per lo Sviluppo | In Italian | → Associations → Development |
| AIDS | Airborne Integrated Data System | In English | → Data → Aeronautics, aircraft |
| AIE | Asociación Iberoamericana de Ergonomía | In Spanish | → Associations → Human-computer interaction |
| AIE | European Association of Electrical Contractors | In English | → Associations → Electrical engineering |
| AIEE | American Institute of Electrical Engineers | In English | → Organizations and associations → Electrical engineering |
| AIEL | Associazione Italiana Energia dal Legno | In Italian | → Associations → Nature → Energy economics → Agricultural sciences |
| AIEP | Asociación Internacional de Escritores Policiácos = IACW | International Association of Crime Writers | In English |
In Spanish | → Associations → Literature → Criminology |
| AIEP | Association Internationale des Études Patristiques = IAPS | International Association of Patristics Studies | In English |
In French | → Associations → Archeology → Roman catholic church |
| AIEP | Association Internationale d'Ethnopsychanalyse | In French | → Associations → Ethnology → Psychology |
| AIF | Asociación Internacional de Fomento (www.worldbank.org/ida/) = AID, IDA, МАР, MAP (look above) |
In Spanish | → Associations → Development |
| AIF | Associazione Festival Italiani (www.italiafestival.it) | In Italian | → Associations |
| AIF | Agence Internationale de la Francophonie | In French | → Organizations and associations → International relations → Language, linguistics, literature |
| AIF | Association des Industriels de France | In French | → Associations → Industry, industrial policy |
| AIF | Association des Industries Ferroviaires | In French | → Associations → Rail transport engineering |
| AIF | Annales de l'Institut Fourier | In French | → Serial publications, periodicals → Mathematics |
| AiF | Arbeitsgemeinschaft industrieller Forschungsvereinigungen | In German | → Research policy → Associations |
| AIF | Auto Increment Field | In English | → Data |
| AIFB | (Institut für) Angewandte Informatik und Formale Beschreibungsverfahren | In German | → Computer science |
| AIFF | Audio Interchange File Format | In English | → Computer-based techniques → Telecommunications |
| AIFM | Associazione Italiana Fonici di Mix | In Italian | → Associations |
| AIFO | Associazione Italiana Amici di Raoul Follereau | In Italian | → Associations |
| AIGA | Associazione Italiana di Geologia Applicata ed Ambientale | In Italian | → Associations → Earth sciences |
| AIGeo | Associazione Italiana di Geografia fisica e Geomorfologia | In Italian | → Associations → Earth sciences → Geography |
| AIH | Acoustical Imaging and Holography | In English | → Serial publications, periodicals → Acoustics |
| AIHA | American Italian Historical Association | In English | → Associations → History |
| AIHUS | Association Inter-Hospitalo-Universitaire de Sexologie | In French | → Associations → Sexual problems → Gynaecology |
| AII | Agence de l'Innovation Industrielle | In French | → Research policy → Industry, industrial policy → Engineering, technology |
| AIIM | Association for Information and Image Management | In English | → Organizations and associations → Graphical processing → Knowledge management |
| AIIM | Asociaţia Internaţională a Inspecţiei Muncii | In Romanian | → Associations |
| AiInt | Air International | In English | → Serial publications, periodicals → Aeronautics, aircraft |
| AIKE | Artificial and Knowledge Engineering Group | In English | → Artificial intelligence → Knowledge management |
| AIL | Association Isépienne du Libre | In French | → Associations → Software |
| AIL | Avionics Integration Laboratories | In English | → Research institutes → Spaceflight engineering, astronautics |
| AILF | Association des Informaticiens de Langue Française | In French | → Associations → Computer science |
| AILS | Ames Imaging Library Server | In English | → Graphical processing → Image processing |
| AILS | Agency for International Langage Study | In English | → Organizations and associations → Language, linguistics, literature |
| AILS | Association Informatique Libre et Santé | In French | → Associations → Software → Medicine |
| AILS | Associazione Italiana Lotta alla Sclerodermia | In Italian | → Associations → Dermatology |
| AIMH | Association for Infant Mental Health | In English | → Associations → Psychiatry |
| AIMSUN2 | Advanced Interactive Microscopic Simulator for Urban and Non-Urban Networks | In English | → Computer simulation → Transport and postal services |
| AinB | Associatie van Interieurarchitecten van België (www.ainb.be) | In Dutch | → Associations → Architecture |
| AIOUN | Annali Istituto Orientale di Napoli | In Italian | → Serial publications, periodicals → Language, linguistics, literature |
| AIPBB | Archives Internationales de Physiologie, de Biochimie et de Biophysique | In French | → Serial publications, periodicals → Biochemistry, biophysics → Physiology |
| AIPCR | Association Internationale Permanente des Congrès de la Route | In French | → Associations → Congresses → Transport and postal services |
| AIPO | Asociación Interacción Persona-Ordenador | In Spanish | → Associations → Human-computer interaction |
| AIPO | African Intellectual Property Organization = ARIPO | African Regional Industrial Property Organization | In English |
In English | → Organizations and associations → Industrial property → Artistic property |
| AIPSC | Associazione Italiana Professionisti Spettacolo e Cultura (www.aipsc.net) | In Italian | → Associations |
| AIQUA | Associazione Italiana per lo studio del Quaternario | In Italian | → Associations → Earth sciences |
| AIR | Asociaţia pentru Instrumentaţie din România | In Romanian | → Associations → Mechanical engineering |
| AIR | Associazione Italiana Rugbysti | In Italian | → Associations → Football and rugby |
| AirCo | Air et Cosmos | In English | → Serial publications, periodicals → Astronomy → Aeronautics, aircraft → 6297 |
| AirSp | Air and Space | In English | → Serial publications, periodicals → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| AIS | Association Internationale de la Sémiotique = IASS | International Association for Semiotic Studies | In English |
In French | → Associations → Semiotics |
| AISAO | Astrofizicheskie Issledovaniia Izvestiya Spetsial'noj Astrofizicheskoj Observatorii | In Russian | → Serial publications, periodicals → Astronomy |
| AISof | Astrofizicheskie Issledovaniya Sofia | In Russian | → Serial publications, periodicals → Astronomy |
| AISPACE | Agir, Informer, Sensibiliser le Public Pour Améliorer la Connaissance des Épilepsies | In French | → Organizations and associations → Neurology |
| AISPO | Associazione Italiana per la Solidarietà tra i Popoli | In Italian | → Associations |
| AIST | Agency of Industrial Science and Technology | In English | → Research policy → Engineering, technology |
| AISV | Association Internationale de Sémiotique Visuelle | In French | → Associations → Semiotics |
| AIT | Association des Internautes Territoriaux | In French | → Internet → Associations |
| AITC | Associazione Italiana Telecineoperatori (www.aitc.it) | In Italian | → Associations → Cinema, movies |
| AITR | Associazione Italiana Tecnici di Ripresa (www.aitr.info) | In Italian | → Associations |
| AITS | Associazione Italiana Tecnici del Suono (www.aits.it) | In Italian | → Associations |
| AIU | Avionics Interface Unit | In English | → Human-computer interaction → Aeronautics, aircraft |
| AIU | Abort Interface Unit | In English | → Human-computer interaction |
| AIVET | Austrian Institute for Virtual Education Techniques | In English | → Computer-based techniques → Education |
| AIXM | Aeronautical Information eXchange Model | In English | → Software → Aeronautics, aircraft |
| AJ | Art Journal | In English | → Serial publications, periodicals → Arts |
| AJ | Astronomical Journal | In English | → Serial publications, periodicals → Astronomy |
| AJa | Astronomischer Jahresbericht | In German | → Serial publications, periodicals → Astronomy |
| AJAX | Asynchronous JavaScript And XML | In English | → Software |
| AJC | Arbeiders Jeugdcentrale | In Dutch | → Organizations and associations → Labour, labour economics |
| AJCh | Australian Journal of Chemistry | In English | → Serial publications, periodicals → Chemistry |
| AJDSI | Association des Journalistes de Défense et de Sûreté Intérieure | In French | → Associations → Newspapers, journalism |
| AJHA | American Journalism Historians' Association | In English | → Associations → Newspapers, journalism → History |
| AJHS | American Jewish Historical Society | In English | → Organizations and associations → Judaism → History |
| AJOZ | Jeugd Organisatie Zwijndrecht | In Dutch | → Organizations and associations → Sport, physical exercises |
| AJP | Association des Journalistes Parlementaires | In French | → Associations → Newspapers, journalism → Parliaments, representation |
| AJPh | American Journal of Philology | In English | → Serial publications, periodicals → Philology |
| AJPIII | All Junky Pages Intentionally Illogical & Inconsistent | In English | → Networks, communication |
| AJS | American Journal of Sociology | In English | → Serial publications, periodicals → Sociology |
| AJSE | Arabian Journal of Science Engineering | In English | → Serial publications, periodicals → Mathematics and natural sciences → Applied sciences, technology |
| AJSR | Australian Journal of Soil Research | In English | → Serial publications, periodicals → 50 |
| AK | Azia Kongreso | In Esperanto | → Congresses |
| AkAtP | Akademia Athenon Praktika | In Greek | → Serial publications, periodicals |
| AKG | Arbeitskreis für Gleichbehandlungsfragen | In German | → Organizations and associations → Social sciences |
| AKMOS | Associatie van Kleine en Middelgrote Ondernemingen in Suriname | In Dutch | → Associations → Economics |
| AKPE | Allgemeines Krankenhaus-Planungs- und Errichtungsgesellschaft | In German | → Organizations and associations → Medicine → Building |
| AKS | Arbeitskreis Schuldruckerei | In German | → Organizations and associations → Education → Graphic industries, printing, publishing |
| AkTek | Akustika i Ul'trazvukovaia Tekhnika | In Russian | → Serial publications, periodicals → Acoustics |
| AKU | Akademia Kotizunuo | In Esperanto | → Organizations and associations |
| AkZh | Akusticheskii Zhurnal | In Russian | → Serial publications, periodicals → Acoustics |
| ALA | American Library Association | In French | → Associations → Libraries |
| ALA | American Library Association | In English | → Associations → Libraries |
| ALADIN | Amis de Linux & Amis du Développement sur INternet | In French | → Organizations and associations → Software → Networks, communication |
| ALAI | Association Littéraire et Artistique Internationale (http://alai.org) | In French | → Associations → Arts → Literature |
| ALAS | Asociación Latinoamericana de Sociología | In Spanish | → Associations → Sociology |
| ALC | Air Logistics Center | In English | → Maintenance and logistics → Transport and postal services |
| ALC | Abbekerk Lambertzwaag Combinatie | In Dutch | → Organizations and associations → Sport, physical exercises |
| ALCO | Associação Brasileira da Indústria de Álcool | In Portuguese | → Associations → Beverage industry |
| ALD | Association of Lighting Designers | In English | → Associations |
| ALEBA | Association Luxembourgeoise des Employés de Banque et d'Assurances | In French | → Associations → Labour, labour economics → Insurance → Finance |
| ALER | Allocataire d'Enseignement et de Recherche | In French | → Research policy → Education |
| ALFEDIAM | Association de Langue Française pour l'Étude du Diabète et des Maladies Métaboliques (www.alfediam.org) | In French | → Associations → Physiology → Pathology |
| AlFr | Alta Frequenza | In Italian | → Serial publications, periodicals → Electronics |
| ALGOL | Algorithmic Language | In English | → Programming languages |
| ALI | Associazione Librai Italiani | In Italian | → Associations |
| ALI | Associazione Locali di Intrattenimento | In Italian | → Associations |
| ALICE | America Latina Interconectada Con Europa | In Spanish | → Networks, communication |
| ALIS | Association Linux et Informatique Souss | In French | → Associations → Operating systems |
| ALJT | Association pour le Logement des Jeunes Travailleurs | In French | → Organizations and associations → Labour, labour economics → Accommodation |
| ALK | Association Luxembourgeoise des Kinésithérapeutes (www.alk.lu) | In French | → Associations → Medicine |
| ALK | Association Languedocienne de Kyudo | In French | → Associations → Entertainment |
| ALL | Applied Logic Laboratory = ALL | Alkalmazott Logikai Laboratórium | In Hungarian |
In English | → Research institutes → Computer science |
| ALL | Alkalmazott Logikai Laboratórium = (look above) |
In Hungarian | → Research institutes → Computer science |
| ALL | Association pour le Logiciel Libre | In French | → Associations → Software |
| ALL | Airborne Laser Laboratory | In English | → Research institutes |
| ALM | Associazione Laicale Missionaria | In Italian | → Associations |
| ALM | Architectures Logicielles et Matérielles | In French | → Hardware → Software |
| ALMA | Arabic Language Multilingual Application | In English | → Software → Language, linguistics, literature |
| ALMS | Automated Logistics Management System | In English | → Maintenance and logistics |
| ALO | Association Luxembourgeoise des Orthophonistes (www.alo.lu) | In French | → Associations → Surgery, orthopaedics, ophthalmology |
| ALO | Association Luxembourgeoise des Olympiens (www.olympiens.lu) | In French | → Associations → Sport, physical exercises |
| ALOLISE | Association pour la promotion des LOgiciels LIbres de Saint-Étienne | In French | → Associations → Software |
| ALP | American Library in Paris | In French | → Libraries |
| ALP | Access Linux Platform | In English | → Networks, communication → Telecommunications |
| ALPAF | Association pour le Logement des Personnels des Administrations Financières | In French | → Organizations and associations → Central administration → Accommodation |
| ALPO | Association of Lunar & Planetary Observers | In English | → Associations → Planets and satellites |
| ALPOJ | Association of Lunar and Planetary Observers Journal | In English | → Serial publications, periodicals → Astronomy |
| ALS | Advanced Logistics System | In English | → Maintenance and logistics |
| ALS | Ada Language System | In English | → Programming languages |
| ALSA | Amyotrophic Lateral Sclerosis Association (www.alsa.org) | In English | → Associations → Pathology |
| ALSSW | ALS Software | In English | → Software |
| ALTA | African Languages Teachers Association | In English | → Associations → Education → Language, linguistics, literature |
| ALTE | Association of Language Testers in Europe | In English | → Associations → Language, linguistics, literature |