| ICL | Imperial College London | In English | → Higher education, universities |
| ICM | Intergovernmental Committee for Migration | In English | → International relations → Migrations |
| ICM | Integrated Cost Module | In English | → Prices |
| ICMI | International Commission on Mathematical Instruction (www.mathunion.org/ICMI/) | In English | → Organizations and associations → Mathematics → Education |
| ICMS | Indirect Cost Management System | In English | → Prices |
| ICMS | International College of Management Sydney | In English | → Specialized or (poly)technical colleges → Computer science |
| ICMS | Information, Communication, Modélisation et Simulation (www.polytechnicum.org/icms/) | In French | → Higher education, universities → Computer-based techniques |
| ICN | Inspectorate of Civil Navigation | In English | → Public administration, government → Transport and postal services |
| ICOTT | International Congress of Official Tourist Traffic Associations | In English | → Organizations and associations → Tourism |
| ICP | Institut Catholique de Paris | In French | → Roman catholic church → Education |
| ICP | International Comparison Program | In English | → Economics |
| ICPO | International Criminal Police Organization | In English | → Organizations and associations → Police |
| ICPO | Irrevocable Corporate Purchase Order | In English | → Trade → 34775 |
| ICPO | Irrevocable Commission Payment Order | In English | → Trade |
| ICRP | International Council on Radiation Protection | In English | → International relations |
| ICS | India China School | In English | → Education |
| ICSA | International Cultic Studies Association | In English | → Associations |
| ICSC | International Council of Shopping Centers | In English | → Organizations and associations → Trade |
| ICSC | International Civil Service Commission = CAPI | Comisión de Administración Pública Internacional | In Spanish = CFPI | Commission de la Fonction Publique Internationale | In French = CAPI | Comissão de Administração Pública Internacional | In Portuguese |
In English | → Public administration, government → United Nations |
| ICSEAD | International Centre for the Study of East Asian Development | In English | → Development |
| ICSID | International Centre for Settlement of Investment Disputes (www.worldbank.org/icsid/) = CIADI | Centro Internacional de Arreglo de Diferencias relativas a Inversiones | In Spanish = CIRDI | Centre International pour le Règlement des Différends relatifs aux Investissements | In French |
In English | → International economic cooperation → Finance |
| ICSN | Indonesian Conflict Studies Network | In English | → Polemology |
| ICSSR | Indian Council of Social Science Research | In English | → Organizations and associations |
| ICSU | Institutul de Cercetari Socio-Umane | In Romanian | → Sociology |
| ICT | Institut Catholique de Toulouse | In French | → Roman catholic church → Specialized or (poly)technical colleges |
| ICTC | International City Tourism Conference | In English | → Tourism |
| ICTR | International Criminal Tribunal for Rwanda (www.ictr.org) = CNUCED | Conférence des Nations Unies sur le Commerce et le Développement | In French = UNCTAD | United Nations Conference on Trade and Development | In English = ЮНКТАД | Конференция на ООН за търговия и развитие | In Bulgarian = CNUCYD | Conferencia de las Naciones Unidas sobre Comercio y Desarrollo | In Spanish = KUNKD | Konferenco de la Unuiĝintaj Nacioj pri Komerco kaj Disvolvado | In Esperanto = UNCTAD | გაეროს ვაჭრობისა და განვითარების კონფერენცია | In Georgian = UNCTAD | การประชุมสหประชาชาติว่าด้วยการค้าและการพัฒนา | In Thai = UNCTAD | 聯合國貿易及發展委員會 | In Chinese = TPIR | Tribunal Penal Internacional para Ruanda | In Spanish = TPIR | Tribunal Pénal International pour le Rwanda | In French = MTKR | Międzynarodowy Trybunał Karny dla Rwandy | In Polish = MTTR | Medzinárodný Trestný Tribunál pre Rwandu | In Slovak |
In English | → United Nations → Law, jurisprudence |
| ICTT | Interaction Collaborative, Télé-formation, Télé-activités | In French | → Human-computer interaction → Networks, communication → Education |
| ICTU | Irish Congress of Trade Union | In English | → Organizations and associations → Labour, labour economics |
| ICTU | Irish Congress of Trade Unions | In English | → Organizations and associations → Labour, labour economics |
| ICTY | International Criminal Tribunal for the former Yugoslavia (www.un.org/icty/) = TPIY | Tribunal Pénal International pour l'ex-Yougoslavie | In French = MKSJ | Međunarodni krivični sud za bivšu Jugoslaviju | In Bosnian = TPI | Tribunalul Penal Internaţional pentru fosta Iugoslavie | In Romanian = МБТЮ | Международный трибунал по бывшей Югославии | In Russian = MTTJ | Medzinárodný trestný tribunál pre bývalú Juhosláviu | In Slovak |
In English | → United Nations → Law, jurisprudence |
| ICU | Istituto per la Cooperazione Universitaria | In Italian | → Organizations and associations → Higher education, universities |
| ICUAER | International Commitee on Urgent Anthropological and Ethnological Research | In English | → Organizations and associations → Ethnology → Anthropology |
| ID | Islamic Dinar | In English | → Finance |
| ID | Initiative Développement | In French | → Organizations and associations → Development |
| IDA | International Development Association (www.worldbank.org/ida/) = AID | Association Internationale de Développement | In French = 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 English | → Associations → Development |
| IDAL | Investment Development Authority of Lebanon | In English | → 33972 |
| IDB | Islamic Development Bank (www.isdb.org) | In English | → Banks → Development |
| IDB | Inter-American Development Bank (www.iadb.org) = BID | Banco Interamericano de Desarrollo | In Spanish = IADB | Inter-American Development Bank | In English = BID | Banque Interaméricaine de Développement | In French = BID | Banco Interamericano de Desenvolvimento | In Portuguese |
In English | → Banks → Development |
| IDDS | Institute for Defense and Disarmament Studies | In English | → Polemology → 355 |
| IDDS | Interdistrict Downtown School | In English | → Education |
| IDE | Investissements Directs à l'Étranger | In French | → Finance |
| IDE | Institute of Developing Economies | In English | → Development |
| IDE | Investissement Direct à l'Étranger | In French | → Economics |
| IDEB | Institut de Développement Économique de la Bourgogne | In French | → Economics |
| IDH | Índex de Desenvolupament Humà = IDH | Indice de Développement Humain | In French = HDI | Human Development Index | In English = IHD | Indico de Homa Disvolviĝo | In Esperanto |
In Catalan | → Demography, statistics, sociology |
| IDH | Indice de Développement Humain = HDI, IHD (look above) |
In French | → Demography, statistics, sociology |
| IDM | Institut für den Donauraum und Mitteleuropa | In German | → Research institutes → International relations → Area studies |
| IDN | Institut Industriel du Nord | In French | → Specialized or (poly)technical colleges → Engineering, technology |
| IDRC | International Development Research Centre = CRDI | Centre de Recherches pour le Développement International | In French |
In English | → Development |
| IDRF | India Development and Relief Fund | In English | → Development |
| IDS | Initiative de Défense Stratégique | In French | → 355 |
| IDSA | Institute for Defense Studies and Analyses | In English | → Research institutes → Polemology → 355 |
| IDSNET | Integrated Defense System Network | In English | → 355 → Military engineering → Networks, communication |
| IDSO | Interdivisional Sales Order | In English | → Trade |
| IEA | 国際エネルギー機関 = AIE | Agence Internationale de l'Énergie | In French = IEA | International Energy Agency | In English = IEA | Internationale Energieagentur | In German = МЭА | Международное энергетическое агентство | In Russian = MAE | Międzynarodowa Agencja Energii[edytuj] | In Polish = IEA | Internationaal Energie Agentschap | In Dutch = AIE | Agencia Internacional de la Energía | In Spanish |
In Japanese | → International relations → Energy economics |
| IEA | Internationaal Energie Agentschap = AIE, МЭА, MAE (look above) |
In Dutch | → International relations → Energy economics |
| IEA | International Energy Agency = AIE, МЭА, MAE (look above) |
In English | → International relations → Energy economics |
| IEA | Internationale Energieagentur = AIE, МЭА, MAE (look above) |
In German | → International relations → Energy economics |
| IEA | Institutul de Economie Agrara | In Romanian | → Economics → Agricultural sciences |
| IEDN | Institut Européen de Distribution et de Négociation | In French | → Higher education, universities → Economics |
| IEE | Institute of International Education | In English | → Education |
| IEE | Institut d'Études Européennes | In French | |
| IEE | Institut für Entwicklungsforschung und Entwicklungspolitik | In German | → International relations |
| IEF | Institutul de Etnografie si Folclor | In Romanian | |
| IEFR | International Emergency Food Reserve | In English | → United Nations |
| IEG | Institute of Economic Growth | In English | → Economics |
| IEHS | Immigration and Ethnic History Society | In English | → Organizations and associations → Migrations → Sociology → History |
| IEI | International Eurasian Institute for Economic and Political Research | In English | → Politics → Economics |
| IEM | Institutul de Economie Mondială | In Romanian | → Economics |
| IEN | Institutul de Economie Naţională | In Romanian | → Economics |
| IEP | Institut d'Études Politiques | In French | → Politics → Education |
| IER | Institutul European din România | In Romanian | → International relations |
| IER | Institut d'Économie Rurale | In French | → Economics |
| IES | Institute of Education Sciences | In English | → Education |
| IES | International Education Services | In English | → Education |
| IES | Initiative Européenne et Sociale | In French | → Political parties and movements |
| IES | Institute for Employment Studies | In English | → Labour, labour economics |
| IESHR | Indian Economic and Social History Review | In English | → Serial publications, periodicals → Politics → Economics |
| IEVP | Instrument Européen de Voisinage et de Partenariat | In French | → European Union |
| IFA | Impôt Forfaitaire Annuel | In French | → Taxes, duties |
| IFAD | Internacia Fonduso de Agrikultura Disvolvado = FIDA | Fondul Internaţional pentru Dezvoltare Agricolă | In Romanian |
In Esperanto | → International relations → Agricultural sciences |
| IFAD | International Fund for Agricultural Development (www.ifad.org) = FIDA | Fondo Internacional de Desarrollo Agrícola | In Spanish = FIDA | Fonds International de Développement Agricole | In French = FIDA | Fundo Internacional de Desenvolvimento Agrícola | In Portuguese |
In English | → United Nations → Finance → Agricultural sciences |
| IFBS | Institut zur Förderung von Brandschutz und Sicherheit | In German | → Artistic property |
| IFBS | International Financial Business Solutions | In English | → Finance |
| IFC | International Finance Corporation = IFS | Internacia Financ-Societo | In Esperanto = SFI | Société Financière Internationale | In French |
In English | → International relations → Finance |
| IFCAI | International Federation of Commercial Arbitration Institutions | In English | → Organizations and associations → Commercial law |
| IFIG | Internationales Forschungs- und Informationszentrum für öffentliche Wirtschaft, Sozialwirtschaft und Genossenschaftswesen = CIRIEC | Centre International de Recherches et d'Information sur l'Économie Publique, Sociale et Coopérative | In French |
In German | → Organizations and associations → Economics |
| IFITT | International Federation of Information Technology and Tourism | In English | → Organizations and associations → Tourism |
| IFOP | Instrument Financier d'Orientation de la Pêche = FIAF | Finanzinstrument für die Ausrichtung der Fischerei | In German = SFOP | Strumento Finanziario di Orientamento della Pesca | In Italian = FIFG | Financial Instrument for Fisheries Guidance | In English = FFU | Fonden för Fiskets Utveckling | In Swedish |
In French | → Finance → European Union → Fishing, hunting |
| IFP | Institut Français de Presse | In French | → Specialized or (poly)technical colleges → Newspapers, journalism |
| IFPCC | Institut Français des Praticiens des Procédures Collectives | In French | → Organizations and associations → Law, jurisprudence |
| IFRAMES | Institut de Formation, de Recherche et d'Animation des Métiers Éducatifs et Sociaux | In French | → Social aid → Education |
| IFRI | Institut Français des Relations Internationales | In French | → Research institutes → International relations |
| IFS | Internacia Financ-Societo = IFC, SFI (look above) |
In Esperanto | → International relations → Finance |
| IFSH | Institut für Friedensforschung und Sicherheitspolitik | In German | → Research institutes → Polemology |
| IFT | Institut Facultaire de Technologie | In French | → Specialized or (poly)technical colleges → Engineering, technology |
| IFT | Institut de Formation des Techniciens | In French | → Specialized or (poly)technical colleges |
| IFTSTP | Institut de Formation des Techniciens Spécialisés des Travaux Publics | In French | → Specialized or (poly)technical colleges → Civil engineering → Civil engineering and land transport |
| IFV | Institut Français de Vienne | In French | → International relations |
| IGAENR | Inspection Générale de l'Administration de l'Éducation | In French | → Central administration → Education |
| IGB | Inspection Générale des Bibliothèques | In French | → Libraries → Public administration, government |
| IGEN | Inspection Générale de l'Éducation Nationale | In French | → Central administration → Education |
| IGEPA | Internationale Gewerkschaft im Europäischen Patentamt | In German | → Labour, labour economics → Industrial property |
| IGF | Inspection Générale des Finances | In French | → Finance → Public administration, government |
| IGH | Immeuble de Grande Hauteur | In French | → Accommodation → Regional planning |
| IGH | Internationaler Gerichtshof (www.icj-cij.org) = CIJ | Cour Internationale de Justice | In French = CIJ | Corte Internacional de Justicia | In Spanish = ICJ | International Court of Justice | In English = CIJ | Corte Internacional de Justiça | In Portuguese = CIJ | Cort Internacional de Justícia | In Catalan = MSD | Mezinárodní soudní dvůr | In Czech = ΔΔΔ | Διεθνές Δικαστήριο της Δικαιοσύνης | In Greek = IK | Internacia Kortumo | In Esperanto = ICJ | 국제사법재판소 | In Korean = TTT | Tarptautinis Teisingumo Teismas | In Lithuanian = MTS | Międzynarodowy Trybunał Sprawiedliwości | In Polish = MSD | Medzinárodný súdny dvor | In Slovak = МСП | Међународни суд правде | In Serbian = MSP | Međunarodni sud pravde | In Serbo-Croatian |
In German | → International relations → Law, jurisprudence |
| IGIDR | Indira Gandhi Institute of Development Research | In English | → Development |
| IGMHB | Institut de Génie Mécanique - Université des Sciences et de la Technologie Haouari Boumediene | In French | → Higher education, universities → Mechanical engineering |
| IGPN | Inspection Générale de la Police Nationale | In French | → Police → Central administration |
| IGS | Inspection Générale des Services | In French | → Public administration, government |
| IHD | Indico de Homa Disvolviĝo = IDH, HDI (look above) |
In Esperanto | → Demography, statistics, sociology |
| IHESI | Institut des Hautes Études de la Sécurité Intérieure | In French | → Police |
| IHF | Internationale Helsinki-Föderation für Menschenrechte (www.ihf-hr.org) = IHF | International Helsinki Federation for Human Rights | In English = IHF-HR | International Helsinki Federation for Human Rights | In English = МХФ | Международная хельсинская федерация по правам человека | In Russian |
In German | → Organizations and associations → Fundamental rights |
| IHF | International Helsinki Federation for Human Rights (www.ihf-hr.org) = IHF-HR, МХФ (look above) |
In English | → Organizations and associations → Fundamental rights |
| IHF-HR | International Helsinki Federation for Human Rights (www.ihf-hr.org) = IHF, МХФ (look above) |
In English | → Organizations and associations → Fundamental rights |
| IHFCC | International Humanitarian Fact-Finding Commission (www.ihffc.org) = CIHEF | Commission Internationale Humanitaire d'Établisssement des Faits | In French |
In English | → Organizations and associations → International law |
| IHK | Industrie- und Handelskammer | In German | → Organizations and associations → Trade |
| IHV | Islamische Hochschulvereinigung | In German | → Islam → Higher education, universities |
| IHV | Industrie- und Handelsvereinigung | In German | → Organizations and associations → Industry, industrial policy → Trade |
| IHV | Independent Hardware Vendor | In English | → Hardware → Trade |
| IIA | Independent Insurance Advisors | In English | → Insurance |
| IIAC | Institut Interdisciplinaire d'Anthropologie du Contemporain | In French | → Research institutes → Sociology |
| IIC | Indian Investment Centre | In English | → 33972 |
| IICD | International Institute for Communication and Development | In English | → Organizations and associations → Development |
| IICI | Institut International de Coopération Intellectuelle | In French | → Organizations and associations → International relations |
| IICP | Institut International de Communication de Paris | In French | → Higher education, universities → 659 |
| IIDH | Instituto Interamericano de Derechos Humanos (www.iidh.ed.cr) = IIDH | Instituto Interamericano de Direitos Humanos | In Portuguese |
In Spanish | → Fundamental rights |
| IIDH | Instituto Interamericano de Direitos Humanos (www.iidh.ed.cr) = (look above) |
In Portuguese | → Fundamental rights |
| IIHEM | International Institute for Higher Education in Morocco | In English | → Higher education, universities |
| IIMB | Indian Institute of Management of Bangalore | In English | → Management → Economics → Higher education, universities |
| IiP | Investor in People | In English | → Labour, labour economics |
| IIPA | Indian Institute of Public Administration | In English | → Public administration, government |
| IIPA | International Institute for Professional Advancement | In English | → Labour, labour economics |
| IIPA | International Intellectual Property Alliance | In English | → Organizations and associations → Artistic property |
| IIR | Institute of International Relations | In English | → International relations |
| IISER | Indian Institute of Science and Education Research (www.iiserpune.ac.in) | In English | → Research institutes → Education |
| IISG | Internationaal Instituut voor Sociale Geschiedenis | In Dutch | → History |
| IISNC | International Institute for the Study of Nomadic Cultures | In English | → Civilization, culture, progress → Migrations |
| IIT | Indian Institute of Technology (www.iit.org) | In English | → Specialized or (poly)technical colleges → Applied sciences, technology |
| IIT | Indian Institute(s) of Technology | In English | → Specialized or (poly)technical colleges → Engineering, technology |
| IIU | International Islamic University | In English | → Islam → Higher education, universities |
| IIUM | International Islamic University Malaysia | In English | → Islam → Higher education, universities |
| IIUM | Instituto Inter-Universitãrio de Macau | In Portuguese | → Higher education, universities |
| IJBA | Institut de Journalisme de Bordeaux Aquitaine | In French | → Specialized or (poly)technical colleges → Newspapers, journalism |
| IJMES | International Journal of Mathematical Education in Science and Technology | In English | → Serial publications, periodicals → Education → Mathematics |
| IJPG | International Journal of Population Geography | In English | → Serial publications, periodicals → Demography → Geography |
| IJSEd | International Journal of Science Education | In English | → Serial publications, periodicals → Education → Mathematics and natural sciences |
| IJTK | Indian Journal of Traditional Knowledge | In English | → Serial publications, periodicals → Ethnology |
| IK | Internacia Kortumo (www.icj-cij.org) = IGH, CIJ, ICJ, MSD, ΔΔΔ, TTT, MTS, МСП, MSP (look above) |
In Esperanto | → International relations → Law, jurisprudence |
| IKEF | Internacia Komerca kaj Ekonomia Fakgrupo | In Esperanto | → Organizations and associations → Trade |
| IKEK | Internacia Komunista Esperantista Kolektivo | In Esperanto | → Organizations and associations → Political parties and movements |
| IKEL | Internacia Komitato por Etnaj Liberecoj | In Esperanto | → Organizations and associations → Politics |
| IKKE | Interreta Konferenco de Komercemaj Esperantoparolantoj | In Esperanto | → Organizations and associations → Trade |
| IKU | Internacia Kongresa Universitato | In Esperanto | → Higher education, universities |
| ILA | Individual Learning Account | In English | → Education |
| ILC | International Law Commission (www.un.org/law/ilc/) | In English | → United Nations → International law |
| ILEI | Internacia Ligo de Esperantistaj Instruistoj | In Esperanto | → Organizations and associations → Education |
| ILMG | Israel-Lebanon Monitoring Group | In English | → International relations |
| ILO | Industry Liaison Office | In English | → Industry, industrial policy |
| ILO | International Labour Organization = ILO | Internacia Labor-Organizo | In Esperanto = OIT | Organisation Internationale du Travail | In French |
In English | → United Nations → Labour, labour economics |
| ILO | Internacia Labor-Organizo = OIT (look above) |
In Esperanto | → United Nations → Labour, labour economics |
| ILR | International Labour Review | In English | → Serial publications, periodicals → Labour, labour economics |
| ILRF | International Labor Rights Fund | In English | → Organizations and associations → Labour, labour economics |
| ILS | International Libertarian Solidarity = SIL | Solidarité Internationale Libertaire | In French |
In English | → Organizations and associations → Political parties and movements |
| ILSIR | Institutul Lombard pentru Schimburi Culturale şi Economice | In Romanian | → Economics |
| ILSP | Islamic Legal Studies Program | In English | → Islam → Law, jurisprudence |
| IMADR | International Movement Against All Forms of Discrimination and Racism | In English | → Organizations and associations → Feminism |
| IMAO | Institut Monétaire de l'Afrique de l'Ouest (www.wami-imao.org) = WAMI | West African Monetary Institute | In English |
In French | → International economic cooperation |
| IMBA | Illinois Mortgage Bankers Association | In English | → Associations → Finance |
| IMCO | Intergovernmental Maritime Consultative Organization | In English | → Organizations and associations → International relations → 6295 → Transport and postal services |
| IME | Institut Monétaire Européen = EMI | European Monetary Institute | In English = EWI | Europäisches Währungsinstitut | In German = EMI | Európai Monetáris Intézet | In Hungarian = ERI | Euroopan rahapoliittinen instituutti | In Finnish = EMI | Europees Monetair Instituut | In Dutch |
In French | → Banks → European Union |
| IMES | Institute for Migration and Ethnic Studies | In English | → Migrations → Sociology → Ethnology |
| IMF | International Monetary Fund = FMI | Fonds Monétaire International | In French = IMF | Internacia Mon-Fonduso | In Esperanto = FMI | Fondul Monetar Internaţional | In Romanian |
In English | → International relations → Finance |
| IMF | Internacia Mon-Fonduso = FMI (look above) |
In Esperanto | → International relations → Finance |
| IMISCOE | International Migration, Integration and Social Cohesion in Europe | In English | → Migrations → Sociology |
| IMM | Institut Marocain de Management | In French | → Management → Higher education, universities |
| IMM | Institut des Mines de Marrakech | In French | → Specialized or (poly)technical colleges → Mining |
| IMO | Internacia Mar-Organizo = IMO | International Maritime Organization | In English = OMI | Organisation Maritime Internationale | In French |
In Esperanto | → International relations → Marine research, oceanography → 6295 → Agricultural sciences |
| IMO | International Maritime Organization = OMI (look above) |
In English | → International relations → Marine research, oceanography → 6295 → Agricultural sciences |
| IMPFA | Irrevocable Master Fee Protection Agreement | In English | → Law, jurisprudence |
| IMPI | Instituto Mexicano de la Propriedad Industrial | In Spanish | → Industrial property → Artistic property |
| IMR | Infant Mortality Rate = ММВБ | Московская межбанковская валютная биржа | In Russian = MICEX | Moscow Interbank Currency Exchange | In English = МБВБ | Мускав банксен валютă биржи | In Chuvash = AKB | Angka Kematian Bayi | In Indonesian = TMI | Taxa de Mortalidade Infantil | In Portuguese = TMI | Taux de Mortalité Infantile | In French = TMI | Taxa de Mortalitat Infantil | In Catalan |
In English | → Statistics → Pediatry |
| IMST3 | Innovation in Mathematics, Science and Technology Teaching | In English | → Education → Mathematics and natural sciences → Mathematics → Engineering, technology |
| INAA | Institut National Agronomique d'Alger | In French | → Specialized or (poly)technical colleges → Agricultural sciences |
| INADR | Institut National Agronomique pour le Développement Rural | In French | → Specialized or (poly)technical colleges → Agricultural sciences |
| INALCO | Institut National des Langues et Civilisations Orientales (www.inalco.fr) | In English | → Higher education, universities → Language, linguistics, literature |
| INASO | Institut National de Formation Supérieure en Agriculture Saharienne de Ouargla | In French | → Specialized or (poly)technical colleges → Agricultural sciences |
| INATN | Institut National Agronomique de Tunisie | In French | → Specialized or (poly)technical colleges → Agricultural sciences |
| INATS | Institut National Agronomique de Thiès | In French | → Specialized or (poly)technical colleges → Agricultural sciences |
| INAV | Institut National Agronomique et Vétérinaire Hassen II | In French | → Specialized or (poly)technical colleges → Agricultural sciences |
| INBO | International Network of Basin Organizations | In English | → 341224 → Hydrology → 626 → Engineering, technology |
| INCPEC | Indonesian National Committee for Pacific Economic Cooperation | In English | → Economics |
| INCSMPS | Institutul Naţional de Cercetare Ştiinţifică în Domeniul Muncii şi Protecţiei Sociale | In Romanian | → Social welfare |
| INDI | Instituto de Desenvolvimento Industrial de Minas Gerais | In Portuguese | → Industry, industrial policy |
| INEC | Institutul Naţional de Expertize Criminalistice | In Romanian | → Law, jurisprudence |
| INED | Institut National d'Études Démographiques | In French | → Research institutes → Demography |
| INEI | Institutul Naţional de Economie şi Informaţie | In Romanian | → Economics → Computer science |
| INELEC | Institut National d'Électricité et d'Électronique | In French | → Specialized or (poly)technical colleges → Electrical engineering → Electronics |
| INES | Institut Notarial de l'Entreprise et des Sociétés | In French | → 334 → Law, jurisprudence |