| Acronym | Sense | Language | Topics |
|---|---|---|---|
| IOK | (Den) internasjonale olympiske komité (www.olympic.org) = CIO | Comité International Olympique | In French = IOC | International Olympic Committee | In English = МОК | Международен олимпийски комитет | In Bulgarian = MOO | Međunarodni olimpijski odbor | In Bosnian = COI | Comitè Olímpic Internacional | In Catalan = MOV | Mezinárodní olympijský výbor | In Czech = IOK | Internationales Olympisches Komitee | In German = ΔΟΕ | Διεθνής Ολυμπιακή Επιτροπή | In Greek = IOK | Internacia Olimpika Komitato | In Esperanto = COI | Comité Olímpico Internacional | In Spanish = ROK | Rahvusvaheline Olümpiakomitee | In Estonian = KOK | Kansainvälinen olympiakomitea | In Finnish = COI | Comité Olímpico Internacional | In Galician = MOO | Međunarodni olimpijski odbor | In Croatian = NOB | Nemzetközi Olimpiai Bizottság | In Hungarian = TOK | Tarptautinis olimpinis komitetas | In Lithuanian = IOC | Internationaal Olympisch Comité | In Dutch = MKOI | Międzynarodowy Komitet Olimpijski | In Polish = COI | Comité Olímpico Internacional | In Portuguese = МОК | Международный олимпийский комитет | In Russian = MOK | Međunarodni olimpijski komitet | In Serbo-Croatian = MOV | Medzinárodný olympijský výbor | In Slovak = MOK | Mednarodni olimpijski komite | In Slovenian = МОК | Међународни олимпијски комитет | In Serbian = IOK | Internationella Olympiska Kommitté | In Swedish = МОК | Міжнародний олімпійський комітет | In Ukrainian |
In Norwegian | → Sport, physical exercises |
| IOK | Internationella Olympiska Kommitté (www.olympic.org) = CIO, IOC, МОК, MOO, COI, MOV, ΔΟΕ, ROK, KOK, NOB, TOK, MKOI, MOK (look above) |
In Swedish | → Sport, physical exercises |
| IOLM | International Organization of Legal Metrology | In English | → Standardization |
| IOM | Interoceanmetal Joint Organization | In English | → Marine research, oceanography → Mining |
| IOM | Istituto Officina dei Materiali (https://www.iom.cnr.it/) | In Italian | → Research institutes → Materials science → Italia |
| IOP | International Organisation of Palaeobotany | In English | → Paleobotany, palynology |
| IOPAN | Instytut Oceanologii Polskiej Akademii Nauk (www.iopan.gda.pl) | In Polish | → Research institutes → Marine research, oceanography → Poland |
| IOPS | Interuniversitaire Onderzoekschool voor Psychometrie en Sociometrie (www.iops.nl) | In Dutch | → Research institutes → Sociology → Psychology → Netherlands |
| IORGC | Institute of Observational Research for Global Change (www.jamstec.go.jp/iorgc/) | In English | → Research institutes → Meteorology, climatology → Japan |
| IOSCS | International Organization for Septuagint and Cognate Studies | In English | → Judaism → Christianity |
| IOT | Inspraakorgaan Turken (in Nederland) | In Dutch | → Migrations → Netherlands |
| IOTA | Institut d'Optique Théorique et Appliquée | In French | → Research institutes → Optics |
| IPA | Internet Privatstiftung Austria | In German | → Foundations → Internet → Telecommunications → Austria |
| IPA | Fraunhofer-Institut für Produktionstechnik und Automatisierung | In German | → Research institutes → Engineering, technology |
| IPA | Interparlamentarische Arbeitsgemeinschaft | In German | → Associations → Parliaments, representation |
| IPA | International Phonetic Association (https://www.internationalphoneticassociation.org/) | In English | → Associations → Alphabetic writing systems → Phonetics, phonology |
| IPA | Independent Pilots Association | In English | → Associations → Aeronautics, aircraft |
| IPA | Independent Practice Association | In English | → Associations → Medicine |
| IPA | International Police Association | In English | → Associations → Police |
| IPA | International Psychoanalytical Association | In English | → Associations → Psychology |
| IPA | International Publishers' Association | In English | → Associations → Graphic industries, printing, publishing |
| IPA | International Powerlifting Association | In English | → Associations |
| IPA | Instituut voor Programmatuurkunde en Algoritmiek (www.win.tue.nl/ipa/) | In Dutch | → Research institutes → Computer science → Algorithms |
| IPAAM | Institut de Préhistoire et d'Archéologie Alpes Méditerranée | In French | → Prehistory → Archeology |
| IPB | International Peace Bureau | In English | → Polemology |
| IPC | Institut de Pathologie du Cheval | In French | → Research institutes → Veterinary medicine → Zoology |
| IPCAA | International Pharmaceutical Congress Advisory Association | In English | → Associations → Congresses → Pharmacology, toxicology |
| IPCC | Intergovernmental Panel on Climate Change (https://www.ipcc.ch) | In English | → United Nations → Meteorology, climatology → Threats to the environment |
| IPEA | Internet Positionning European Association | In English | → Associations → Internet → 659 |
| IPF | Internet pour la France | In French | → Internet → France |
| IPFA | International Plasma Fractionation Association | In English | → Associations → Pharmacology, toxicology |
| IPIC | Institut de la Propriété Intellectuelle du Canada (www.ipic.ca) | In French | → Artistic property |
| IPIC | Intellectual Property Institute of Canada (www.ipic.ca) | In English | → Artistic property |
| IPIG | ILL Protocol Implementers Group | In English | → Networks, communication → Libraries |
| IPK | Institut für Produktionsanlagen und Konstruktionstechnik (www.ipk.fraunhofer.de) | In German | → Research institutes → Construction → Germany |
| IPL | Institut Pasteur de Lille (www.pasteur-lille.fr) | In French | → Research institutes → Biological sciences → Medicine → France |
| IPN | Institut für Biophysik und Nanosystemforschung | In German | → Research institutes → Biochemistry, biophysics |
| IPN | Instytut Pamięci Narodowej - Komisja Ścigania Zbrodni przeciwko Narodowi Polskiemu (www.ipn.gov.pl) | In Polish | → Research institutes → Law, jurisprudence → History → Poland |
| IPO | International Progress Organization (www.i-p-o.org) | In English | → International relations |
| IPP | Institute for Parallel Processing | In English | → Research institutes → Computer science |
| IPPA | Indo-Pacific Prehistory Association | In English | → Associations → Prehistory |
| IPPS | International Plant Propagators Society | In English | → Agricultural sciences |
| IPPS | International Parallel Processing Symposium | In English | → Congresses → Computer-based techniques → Mathematics |
| IPPS | International Pelvic Pain Society | In English | → Pathology |
| IPPS | International Pre-Platonic Studies | In English | → Philosophy, psychology → Literature |
| IPPS | The International Plant Propagators Society | In English | → Agricultural sciences |
| IPPT | Instytut Podstawowych Problemów Techniki (www.ippt.gov.pl) | In Polish | → Research institutes → Engineering, technology → Poland |
| IPRC | International Pacific Research Center (http://iprc.soest.hawaii.edu) | In English | → Research institutes → Meteorology, climatology |
| IPRCS | Irish Pattern Recognition and Classification Society | In English | → Computer-based techniques |
| IPS | International Primatological Society (www.internationalprimatologicalsociety.o) | In English | → Primates |
| IPSI | Institut pour la Promotion des Sciences de l'Ingénieur (www.ipsi-cetim.fr) | In French | → Research institutes → Engineering, technology |
| IPSI | Islamic Propagation Society International | In English | → Islam |
| IPSJ | Information Processing Society of Japan | In English | → Data processing → Japan |
| IPT | Instituto de Pesquisas Tecnológicas (www.ipt.br) | In Portuguese | → Research institutes → Fishing, hunting → Brazil |
| IPTEA | Internacia Poŝtista kaj Telekomunikista Esperanto-Asocio | In Esperanto | → Associations → Telecommunications → Transport and postal services → Artificial languages (linguistics) |
| IQOQI | Institut für Quantenoptik und Quantenkommunikation (www.iqoqi.at) = IQOQI | Institute for Quantum Optics and Quantum Information | In English |
In German | → Research institutes → Optics → Quantum mechanics → Austria |
| IQOQI | Institute for Quantum Optics and Quantum Information (www.iqoqi.at) = (look above) |
In English | → Research institutes → Optics → Quantum mechanics → Austria |
| IQSA | International Qajar Studies Association | In English | → Associations |
| IRAM | Institut de Radioastronomie Millimétrique | In French | → Research institutes → Astronomy |
| IRAS | Interreligiöse Arbeitsgemeinschaft in der Schweiz | In German | → Associations → Religion, theology → Switzerland |
| IRAS | Istituto Spezzino Ricerche Astronomiche | In Italian | → Research institutes → Astronomy |
| IRB | International Rugby Board | In English | → Football and rugby |
| IRCAD | Institut de Recherche contre les Cancers de l'Appareil Digestif (https://www.ircad.fr/) | In French | → Research institutes → Oncology → France |
| IRCAM | Institut de Recherche et Coordination Acoustique/Musique (www.ircam.fr) | In French | → Research institutes → Music → Acoustical engineering → France |
| IRCC | Institute for Research on Contemporary China | In English | → Research institutes → Area studies → China |
| IRCCS | Istituto di Ricovero e Cura a Carattere Scientifico | In Italian | → Research institutes → Research policy |
| IRCCyN | Institut de Recherche en Communications et Cybernétique de Nantes (www.irccyn.ec-nantes.fr) | In French | → Research institutes → Telecommunications → Electronics → France |
| IRCICA | Research Centre for Islamic History, Art and Culture | In English | → Research institutes → Islam → Arts → History → Civilization, culture, progress |
| IRCJS | International Research Center for Japanese Studies | In English | → Research institutes → Area studies |
| IrDA | Infrared Data Association | In English | → Associations → Telecommunications |
| IRE | Institutul Naţional Român pentru Studiul Amenajării şi Folosirii Surselor de Energie | In Romanian | → Energy economics |
| IREA | Irana Esperanto-Asocio | In Esperanto | → Associations → Artificial languages (linguistics) |
| IREJO | Irana Esperantista Junulara Organizo | In Esperanto | → Artificial languages (linguistics) |
| IREM | Institut de Recherches sur l'Enseignement des Mathématiques | In French | → Research institutes → Education → Mathematics |
| IRES | Institut de Recherches Économiques et Sociales | In French | → Research institutes → Social sciences → Economics |
| IRESCO | Institut de Recherche Européen en Sociologie et Socio-économie | In French | → Research institutes → Sociology → Economics |
| IRESCO | Institut de Recherche sur les Sociétés Contemporaines | In French | → Research institutes → Sociology |
| IREWG | Institute for Research and Education on Women and Gender (www.womenandgender.buffalo.edu) | In English | → Research institutes → Education → Social sciences → Feminism |
| IRI | Islamic Research Institute | In English | → Research institutes → Islam |
| IRI | Institut de Recherche et d'Innovation (www.iri.centrepompidou.fr) | In French | → Research institutes → Research policy → Civilization, culture, progress → France |
| IRIS | Institut des Relations Internationales et Stratégiques (www.iris-france.org) | In English | → Research institutes → International relations |
| IRIS | Imaginons un Réseau Internet Solidaire | In French | → Internet |
| IRIS | Inter-Regiona Internacia Semajno | In Esperanto | → Congresses |
| IRIS | Incorporated Research Institutions for Seismology (www.iris.edu) | In English | → Research institutes → Seismology, earthquakes |
| IRIS | Institut de Recherches sur les Implications de la langue des Signes | In French | → Research institutes → Linguistics |
| IRIT | Institut de Recherche Informatique de Toulouse (www.irit.fr) | In French | → Research institutes → Computer science → France |
| IRIT | Institut de Recherche en Informatique de Toulouse | In French | → Research institutes → Computer science |
| IRIZ | International Research Institute for Zen Buddhism (http://iriz.hanazono.ac.jp) | In English | → Research institutes → Buddhism → Japan |
| IRNIK | Institut für das Recht der Netzwirtschaften, Informations- und Kommunikationstechnologie (www.irnik.de) | In German | → Research institutes → Law, jurisprudence → Computer science → Telecommunications |
| IRPI | Institut de Recherche en Propriété Intellectuelle (www.irpi.ccip.fr) | In French | → Research institutes → Artistic property → France |
| IRQ | Institut de Recherche sur le Québec (www.irq.qc.ca) | In French | → Research institutes → Area studies → Canada |
| IRRI | International Rice Research Institute (www.irri.org) | In English | → Research institutes → Agricultural sciences |
| IRSC | Instituts de recherche en santé du Canada (www.cihr.ca) = CIHR | Canadian Institutes of Health Research | In English |
In French | → Research institutes → Biological sciences → Medicine → Canada |
| IRSEA | Institut de Recherche sur le Sud-Est Asiatique (www.univ-provence.fr/irsea/) | In English | → Research institutes → Area studies |
| IRSEEM | Institut de Recherche en Systèmes Électroniques Embarqués | In French | → Research institutes → Electronics |
| IRSN | Institut de Radioprotection et de Sécurité Nucléaire | In French | → Research institutes → Nuclear technology |
| IRSST | Institut de recherche Robert-Sauvé en santé et sécurité du travail (https://www.irsst.qc.ca) | In French | → Research institutes → Medicine → Accidents, risks, safety → Canada |
| IRT | Institut für Rundfunktechnik (www.irt.de) | In German | → Research institutes → Telecommunications → Germany |
| IRTC | International Rehabilitation Council for Torture | In English | → Fundamental rights |
| IRWA | Iowa Rural Water Association (www.iarwa.org) | In English | → Associations → Environmental technology, water supply, waste management |
| IS | Internacia Seminario | In Esperanto | → Congresses |
| ISA | International Sociological Association | In English | → Associations → Sociology |
| ISA | International Seabed Authority (www.isa.org.jm) | In English | → International relations → Marine research, oceanography → Mining |
| ISAE | Internacia Scienca Asocio Esperantista | In Esperanto | → Associations → Mathematics and natural sciences → Artificial languages (linguistics) |
| ISAFIS | Indonesian Student Association for International Studies | In English | → Associations → Higher education, universities |
| ISAI | Institute of Scrap Recycling Industries (www.isri.org) | In English | → Environmental technology, water supply, waste management → Electronics |
| ISAS | Institute of Space and Astronautical Science (www.isas.jaxa.jp) | In English | → Research institutes → Astronomy → Astronautics → Japan |
| ISAZ | International Society for Anthrozoology | In English | → Zoology |
| ISBL | Institution(s) sans but lucratif | In French | |
| ISBLSM | Institutions Sans But Lucratif au Service des Ménages | In French | |
| ISBS | Internationales Symposium für Biomechanik im Sport | In German | → Congresses → Biological sciences → Sport, physical exercises |
| ISC | Ingense Sport Club | In Dutch | → Sport, physical exercises |
| ISC | International Seismological Centre (www.isc.ac.uk) | In English | → Research institutes → Seismology, earthquakes → United Kingdom |
| ISCAR | International Society for Cultural and Activity Research | In English | → Social sciences → Civilization, culture, progress |
| ISCOS | Istituto Sindacale per la Cooperazione allo Sviluppo | In Italian | → Development |
| ISD | International Society of Differentiation | In English | → Biological sciences |
| ISDN | Institut des Sciences du Document Numérique (http://isdn.enssib.fr) | In English | → Research institutes → Libraries → Document processing → France |
| ISDP | International Society for Developmental Psychobiology (www.isdp.org) | In English | → Developmental psychology → Biological sciences |
| ISDP | Institute for Security & Development Policy (www.isdp.eu) | In English | → Research institutes → Politics → Development → Europe |
| ISDP | International Society of Dermatopathology (www.intsocdermpath.org) | In English | → Dermatology |
| ISE | Internacia Semajnfino Esperantista | In Esperanto | → Congresses → Artificial languages (linguistics) |
| ISE | Institut Syndical Européen | In French | → Labour, labour economics |
| ISECOM | Institute for Security and Open Methodologies (www.isecom.org) | In English | → Computer science |
| ISED | Institute for the Study of Education and Human Development | In English | → Research institutes → Education |
| ISEEES | Institute of Slavic, East European, and Eurasian Studies | In English | → Research institutes → Area studies |
| ISEGI | Instituto Superior de Estatística e Gestão de Informação | In Portuguese | → Research institutes → Statistics |
| ISEM | Institut des Sciences de l'Évolution de Montpellier | In French | → Research institutes → Biological sciences → France |
| ISER | Institute for Social and Economic Research | In English | → Research institutes → Demography, statistics, sociology → Economics |
| ISF | Ingénieurs Sans Frontières | In French | → Engineering, technology |
| ISFE | International Society of Facilities Executives | In English | |
| ISFP | International Society for Fibrinolysis and Proteolysis | In English | → Biochemistry, biophysics |
| ISH | Institut des Sciences de l'Homme | In French | → Research institutes → Social sciences → France |
| ISH | International Society of Hypertension (https://www.ish-world.com) | In English | → Research institutes → Cardiology |
| ISH | Institut des Sciences Historiques | In French | → History → 929731 → France |
| ISH | International Sanitation and Heating (http://https://ish.messefrankfurt.com/) | In English | → Congresses → Environmental technology, water supply, waste management → Germany |
| ISH | International Society for Hypnosis (https://www.ishhypnosis.org) | In English | → Psychology → Psychiatry |
| ISHEASTM | International Society for the History of East Asian Science Technology and Medicine | In English | → History → Medicine → Engineering, technology |
| ISHS | International Society for Horticultural Science | In English | → Horticulture |
| ISIAO | Istituto italiano per l'Africa e l'Oriente (www.isiao.it) | In Italian | → Italia |
| ISIR | Institut des Systèmes Intelligents et Robotique | In French | → Research institutes → Mechanical engineering → Electronics |
| ISIR | International Society for Intelligence Research | In English | → Neurology |
| ISIR | International Society for Interferon-Research | In English | → Biochemistry, biophysics → Medicine |
| ISIR | Institut für Statistik und internationale Registrierungen | In German | → Research institutes → Statistics |
| ISIR | Institut des Systèmes Intelligents et de Robotique (www.isir.upmc.fr) | In French | → Research institutes → Artificial intelligence → Electronics |
| ISIR | International Society for Immunology of Reproduction | In English | → Immunology and allergy → Reproductive biology |
| ISIS | Institut für Softwartechnik und Interaktive Systeme | In German | → Software → Human-computer interaction |
| ISIS | International Society of Infant Studies | In English | → Education → Pediatry |
| ISKCON | International Society for Krishna Consciousness = AICK | Association Internationale pour la Conscience de Krishna | In French |
In English | → Associations → Indian religions → Modern spiritual movements |
| ISL | Inertial Systems Laboratory | In English | → Research institutes → Mechanical engineering |
| ISM | Institut des Sciences Moléculaires | In French | → Research institutes → Biochemistry, biophysics |
| ISMCS | International Society for Mechanical Circulatory Support (https://www.ismcs.org) = ISRBP | International Society for Rotary Blood Pumps | In English |
In English | → Mechanical engineering → Blood and circulatory system → Cardiology |
| ISME | International Symposium on Microbial Ecology | In English | → Congresses → Ecology |
| ISME | Irish Small and Medium Enterprises | In English | → Economic policy |
| IsMEO | Istituto Italiano per il Medio ed Estremo Oriente | In Italian | → Area studies → Italia |
| ISO | International Standardization Organization | In English | → Standardization |
| ISOC | Internet Society | In English | → Internet |
| ISOPT | International Symposium on Ocular Pharmacology and Therapeutics | In English | → Congresses → Pharmacology, toxicology → Ophthalmology |
| ISP | Instytut Studiów Politycznych | In Polish | → Research institutes → Politics |
| ISPF | Internet Service Providers' Forum | In English | → Internet |
| ISPG | International Society of Psychiatric Genetics | In English | → Genetics → Psychiatry |
| ISPOG | International Society of Psychosomatic Obstetrics and Gynecology | In English | → Psychology → Gynaecology → Obstetrics |
| ISR | Instituto de Sistemas e Robótica | In Portuguese | → Research institutes → Electrical engineering |
| ISRA | Islamic Research Academy | In English | → Academies → Islam |
| ISRBP | International Society for Rotary Blood Pumps (https://www.ismcs.org) = ISMCS (look above) |
In English | → Mechanical engineering → Blood and circulatory system → Cardiology |
| ISREC | Institut Suisse de Recherche Expérimentale sur le Cancer | In French | → Research institutes → Oncology → Switzerland |
| ISRO | Indian Space Research Organisation (www.isro.org) | In English | → Research institutes → Astronomy → Astronautics → India |
| ISS | Institute of Social Studies | In English | → Sociology |
| ISSBD | International Society for the Study of Behavioral Development | In English | → Developmental psychology |
| ISSIR | International Society for Sexual and Impotence Research | In English | → Sexual problems → Urology → Applied sciences, technology |
| ISSM | International Society for Sexual Medicine | In English | → Urology → Gynaecology → Psychology |
| ISST | International Society of Seed Technologists | In English | → Agricultural sciences |
| ISST | International Ski & Sun Team | In English | → 786 |
| ISST | International Society for the Study of Time | In English | |
| ISSTD | International Society for the Study of Trauma and Dissociation | In English | → Neurology |
| IST | Istituto Scientifico Tumori | In Italian | → Research institutes → Oncology |
| ISTA | International Seed Testing Association | In English | → Associations → Agricultural sciences |
| ISTAG | Information Society Technologies Advisory Group | In English | → Networks, communication → Telecommunications |
| ISTAT | Istituto Nazionale di Statistica (www.istat.it) | In Italian | → Research institutes → Statistics → Italia |
| ISTH | International Society on Thrombosis and Haemostasis | In English | → Cardiology |
| ISUOG | International Society of Ultrasound in Obstetrics and Gynecology (www.isuog.org) | In English | → Diagnostics → Gynaecology, obstetrics |
| ISV | Institut des Sciences du Végétal | In French | → Research institutes → Biological sciences → Botany |
| ISVMA | Illinois State Veterinary Medical Association (www.isvma.org) | In English | → Associations → Veterinary medicine → United States |
| ITAA | Information Technology Association of America (www.itaa.org) | In English | → Associations → Computer science → Telecommunications → United States |
| ITAL | Instituto de Tecnologia de Alimentos | In Portuguese | → Research institutes → Beverage industry → Food technology |
| ITASEAS | Italian Association for Southeast Asian Studies | In English | → Associations → Area studies → Italia |
| ITCF | Institut Technique des Céréales et des Fourrages | In French | → Research institutes → Agricultural sciences |
| ITG | Instituut voor Tropische Geneeskunde Antwerpen (www.itg.be) = ITM | Institut de Médecine Tropicale d'Anvers | In French = IMT | Institute of Tropical Medicine in Antwerp | In English |
In Dutch | → Research institutes → Pathology → Belgium |
| ITI | Instituto Tecnológico de Informática (www.iti.upv.es) | In Spanish | → Research institutes → Computer science → Spain |
| ITM | Institut de Médecine Tropicale d'Anvers (www.itg.be) = ITG, IMT (look above) |
In French | → Research institutes → Pathology → Belgium |
| ITMI | In Touch Mission International | In English | → Christianity |
| ITO | International Trade Organization | In English | → Trade → International economic cooperation |
| ITQB | Instituto de Tecnologia Química e Biológica | In Portuguese | → Research institutes → Biological sciences → Chemical technology |
| ITRE | Internacia Traduk-Reto per Esperanto | In Esperanto | → Translation → Artificial languages (linguistics) |
| ITRI | Information Technology Research Institute | In English | → Research institutes → Computer science |
| ITS | International Tracing Service (http://its-arolsen.org) | In English | |
| ITSC | Interregional Telecommunications Standards Committee | In English | → Networks, communication → Telecommunications |
| ITSTC | Information Technology Steering Committee | In English | → Computer science → Telecommunications |
| ITTO | International Tropical Timber Organization (www.itto.or.jp) = OIBT | Organisation Internationale des Bois Tropicaux | In French = OIMT | Organización Internacional de las Maderas Tropicales | In Spanish |
In English | → Environmental protection → Timber and woodworking industry |
| ITU | International Telecommunication Union = IUT | Internacia Unio pri Telekomunikado | In Esperanto = UIT | Union Internationale des Télécommunications | In French |
In English | → Telecommunications |
| ITU | Institut für Transurane | In German | → Research institutes → Nuclear, atomic, and molecular physics → Nuclear technology |