Companies starting with I
354,318 records.
- Institute for Integrated Rural DevelopmentActive, Shimla, since 2010
- Institute for Integrative and FM Education Private LimitedActive, Gujarat, since 2026
- Institute for Integrative MedicinefoundationActive, Karnataka, since 2020
- Institute for Integrative Systems BiologyUniversity of Valencia Science Park, Spain
- Institute for Intelectual in Computer Te Chnology Private LimitedStruck off, Jharkhand, since 1999
- Institute for Interdisciplinary Information SciencesPeople's Republic of China
- Institute for Interdisciplinary Research of the University of CoimbraPortugal
- Institute for Interdisciplinary Research on Conflict and ViolenceGermany
- Institute for International Assistance and SolidarityBelgium
- Institute for International Development
- Institute for International Economic PolicyGeorge Washington University, United States
- Institute for International Economic StudiesSweden
- Institute for International Law of Peace and Armed ConflictGermany
- Institute for International Monetary AffairsTokyo, Japan
- Institute for International Political StudiesMilan, Italy
- Institute for International Relations, Tsinghua UniversityPeople's Republic of China
- Institute for International Research
- Institute for International Talent Development Private LimitedActive, Goa, since 2015
- Institute for Interstellar StudiesUnited Kingdom, United Kingdom
- Institute for Investigative Journalism
- Institute for Iranian Contemporary Historical StudiesIran
- Institute for Islamic and Social Studies
- Institute for Jewish History in AustriaAustria
- Institute for Jewish Ideas and IdealsUnited States
- Institute for JusticeArlington County, United States
- Institute for Justice & Democracy in HaitiBoston, United States
- Institute for Justice and ReconciliationCape Town, South Africa
- Institute for Knowledge Discovery Private LimitedActive, Delhi, since 2017
- Institute for Labor Studieslegal services, Quezon City, Philippines
- Institute for Land Reclamation and Grassland FarmingDissolved, Falenty, Poland
- Institute for Language and Preparatory Studies, Charles UniversityCzech Republic
- Institute for Language and Speech ProcessingGreece
- Institute for Laser TechnologyJapan
- Institute for Laser Technology in Medicine and Measurement TechniqueGermany
- Institute For Latino ProgressActive, Chicago, United States
- Institute for Law and FinanceFrankfurt, Germany
- Institute for Law, Science and Global SecurityUnited States
- Institute for Lean Construction ExcellenceActive, Maharashtra, since 2008
- Institute for Learning and Career CounseActive, Delhi
- Institute for Legacy of Polish National ThoughtPoland
- Institute for Life and Medical Sciences, Kyoto UniversityJapan
- Institute for Life Sciences & Chemistry of Hogeschool Utrecht
- Institute for Literature and ArtSerbia
- Institute for Local Self-RelianceWashington, D.C., United States
- Institute for Logic, Language and Computation
- Institute for LudologyGermany
- Institute for Ludology and Playing ArtsAustria
- Institute for Marine and Antarctic StudiesBattery Point, Australia
- Institute for Marine Mammal Studiesenvironment, Gulfport, United States
- Institute for Maritime Policy and StrategyHaifa, Israel
- Institute for Market, Consumption and Business Cycles ResearchWarsaw, Poland
- Institute for Market-oriented ManagementMannheim, Germany
- Institute for Marxism-Leninism (Bratislava)Soviet Union
- Institute for Materials ResearchJapan
- Institute for Mathematical and Management Sciences Private LimitedStruck off, Delhi, since 2015
- Institute for Mathematical ResearchSwitzerland
- Institute for Mathematical Sciences
- Institute for Mathematics and its ApplicationsUnited States
- Institute for Media and Communication Policyresearch, Berlin, Germany
- Institute for Medical Biology, Polish Academy of SciencesPoland
- Institute for Medical Engineering and ScienceUnited States
- Institute For Medical Research, Israel-CanadaIsrael
- Institute for Medicine Development LtdActive, Other business support service activities n.e.c., Woking, United Kingdom
- Institute for Mental Health and Psychological Research LLPActive, Karnataka, since 2025
- Institute for Mergers, Acquisitions and Allianceseducation, Zurich, Switzerland
- Institute for Metal StructuresSlovenia
- Institute for Micro Process Engineering
- Institute for Middle East UnderstandingTustin, United States
- Institute for Military History, MNDSouth Korea
- Institute for Molecular and Cell BiologyPortugal
- Institute for Molecular BioscienceBrisbane, Australia
- Institute for Molecular Medicine FinlandFinland
- Institute for Molecular ScienceJapan
- Institute for Monetary and Economic StudiesNihonbashi-Hongokuchō, Japan
- Institute for Monetary and Financial StabilityHouse of Finance, Germany
- Institute for Monitoring Peace and Cultural Tolerance in School EducationRamat Gan, Israel
- Institute for Montenegrin Language and Literature
- Institute for Multidisciplinary Research in Applied BiologySpain
- Institute for Museum ResearchGermany
- Institute for Music and Neurologic FunctionAlzheimer's disease, health care, Alzheimer's Research, New York, United States
- Institute for national accountsBrussels, Belgium
- Institute for National Research in Transportation and SafetyDissolved, France
- Institute for National Security StudiesIsrael
- Institute for Nature Conservation and ForestsAlgés, Portugal
- Institute for Nature ManagementBelarus
- Institute for Nature's Green Protection Foundation (Ingp)Active, Andhra Pradesh, since 2026
- Institute for Neurocognitive ResearchMoscow, Russia
- Institute for New Testament Textual ResearchMünster, Germany
- Institute for Newspaper ResearchGermany
- Institute for Nonprofit Newsjournalism, Encino, United States
- Institute for Nuclear Research and Nuclear EnergyBulgaria
- Institute for Nuclear Research of NASUUkraine
- Institute for Numerical Analysis and ComputationActive, Dublin, Ireland
- Institute for Occult Studies Private LimitedStruck off, Maharashtra, since 2001
- Institute for Occupant Safety Research LActive, Maharashtra, since 2016
- Institute for Occupational Safety and Health of the German Social Accident InsuranceGermany
- Institute for Offshore and Maritime Studies LLPActive, Maharashtra, since 2016
- Institute for Oneworld HealthActive, since 2007
- Institute for OneWorld HealthSeattle, United States
- Institute for Organic Synthesis and PhotoreactivityItaly
- Institute for Organisation Development L LPActive, Karnataka
- Institute for Palatine History and Folklife StudiesGermany
- Institute for Palestine StudiesLebanon
- Institute for Parallel ProcessingBulgaria
- Institute for Parliamentary ResearchBerlin, Germany
- Institute for Particle and Nuclear PhysicsHungary
- Institute for Peace and Conflict Resolution Nigeria
- Institute for Peace and Security Studies
- Institute for Peace Research and Security Policy at the University of HamburgGermany
- Institute for Pedagogical ResearchSerbia
- Institute for Personality Empowerment Competency Building & Transform Educare Private Limited (OPC)Active, Karnataka, since 2014
- Institute for PhilanthropyUnited States
- Institute for Philanthropy and Humanitarian DevelopmentActive, Rajasthan, since 2015
- Institute for Philosophy and Social TheorySerbia
- Institute for Photovoltaics
- Institute for Physical ResearchArmenia
- Institute for Physico-Medical ResearchPoland
- Institute for Pioneering Insightful Research & Edutech Private LimitedActive, Uttar Pradesh, since 2021
- Institute for Pioneering of Education and Economic ExcellenceBandar Tun Razak, Malaysia
- Institute for Plasma ResearchGandhinagar
- Institute for Plasma ResearchIndia
- Institute for Plasma Research SocietyActive, Gandhinagar, India
- Institute for Policy Advocacy and Governance AssociationActive, Delhi, since 2019
- Institute for Policy and Strategy, Reichman UniversityIsrael
- Institute for Policy IntegrityUnited States
- Institute for Policy Research and Catholic Studies
- Institute for Policy Research StudiesActive, Delhi, since 2011
- Institute for Policy Research StudiesActive, Maharashtra, since 2011
- Institute for Policy StudiesWashington, D.C., United States
- Institute for Polish-Jewish Studies(the)Active, Cultural education, London, United Kingdom
- Institute for Political Entrepreneurs & Election Management Private LimitedActive, Maharashtra, since 2021
- Institute for Political Studies in BelgradeBelgrade, Serbia
- Institute for Political Studies – Catholic University of PortugalPortugal
- Institute for Politics and SocietyPrague, Czech Republic
- Institute for Polymer MechanicsLatvia
- Institute for Practical Research and Training
- Institute for Preservation of Archaeological Heritage of Northwest BohemiaCzech Republic
- Institute for Prevention and Occupational MedicineGermany
- Institute for Problems in Mechanics of the Russian Academy of SciencesMoscow, Soviet Union
- Institute for Problems of Cryobiology and CryomedicineUkraine
- Institute for Product Development KarlsruheInstitute for Product Development Karlsruhe, Germany
- Institute for Professional and Organizational Excellence Private LimitedActive, Meghalaya, since 2026
- Institute for Professional Excellence and Consultancy Private LimitedActive, Maharashtra, since 2004
- Institute for ProgressWashington, D.C., United States
- Institute for Project Management Private LimitedActive, Odisha, since 2008
- Institute for Propaganda AnalysisDissolved, United States
- Institute for Prospective Technological StudiesWorld Trade Center Seville, Spain
- Institute for Prostate CancerActive, Maharashtra, since 2011
- Institute for protection of cultural monuments and Museum in StrumitsaNorth Macedonia
- Institute for protection of cultural monuments and Museum, PrilepNorth Macedonia
- Institute for Protein Research, Osaka UniversityJapan
- Institute for Protest and Social Movement StudiesBerlin, Germany
- Institute for Public AccuracyUnited States
- Institute for Public Policy and Good Governance
- Institute for Public Policy ResearchActive, Research and experimental development on social sciences and humanities, London, United Kingdom
- Institute for Public RelationsUnited States
- Institute for Pure and Applied MathematicsUnited States
- Institute for Quality Indicators (Sweden)Gothenburg, Sweden
- Institute for Quantified Communications LLPStruck off
- Institute for Quantitative BiosciencesJapan
- Institute for Quantitative Investment ResearchActive, Activities of professional membership organizations, Tonbridge, United Kingdom
- Institute for Quantum ComputingCanada
- Institute for Quantum Optics and Quantum InformationInnsbruck, Austria
- Institute for Radio Imaging Studies andActive, Tamil Nadu, since 2019
- Institute for RadioelementsFleurus, Belgium
- Institute for Radium Research, ViennaDissolved, Austria
- Institute for Raptor Biomedicine Japanresearch, Japan
- Institute for Real Estate and Infrastructure Strategy Private LimitedActive, Karnataka, since 2026
- Institute for Recent History of SerbiaSerbia
- Institute for Reference Materials and MeasurementsBelgium
- Institute for Renewable EnergyWarsaw, Poland
- Institute for Reporters' Freedom and SafetyDissolved, Azerbaijan
- Institute for Research in Computer Science and EngineeringArgentina
- Institute for Research and Coordination Acoustic/Musicengineering, technical studies, research, Quartier Saint-Merri, France
- Institute for Research and GrowthActive, Delhi, since 2016
- Institute for Research and Innovation in Social ServicesActive, Research and experimental development on social sciences and humanities, Edinburgh, United Kingdom
- Institute for Research and Technology in Food and AgricultureTorre Marimon, Spain
- Institute for Research in BiomedicineBarcelona Scientific Park, Spain
- Institute for Research in Economics and Business Administrationresearch, Bergen, Norway
- Institute for Research in Fundamental SciencesIran
- Institute for Research in Information and Scholarship
- Institute for Research in Management and Advanced TechnologyActive, Tamil Nadu, since 2009
- Institute for Research in Plant BiologyCanada
- Institute for Research in Transformational LearningActive, Delhi, since 2014
- Institute for Research Information and Quality AssuranceGermany
- Institute for Research on Population and Social PoliciesItaly
- Institute for Research on PovertyUnited States
- Institute for Research on the Fundamental Laws of the UniverseFrance
- Institute for Research on the History of Children's Literature in IranIran
- Institute for Research on Turkish CultureTurkey
- Institute for Research SoftwareUniversity of Edinburgh, United Kingdom
- Institute for Responsible CitizenshipWashington, D.C., United States
- Institute for Responsible Medication UseUtrecht
- Institute for Risk Assessment Sciences
- Institute For Rural Development And Social Services JalgaonActive, Jalgaon, India
- Institute for Rural India Skills Entrepreneurship and EducationActive, Delhi, since 2013
- Institute for Safe Medication PracticesUnited States
- Institute for Safety Problems of Nuclear Power PlantsUkraine
- Institute for Science and ArtAustria
- Institute for Science and International SecurityWashington, D.C., United States
- Institute for Science, Ethics and InnovationUnited Kingdom
- Institute for Science, Society and PolicyCanada
- Institute for Scientific InformationDissolved, research and development, Philadelphia, United States
- Institute for Scientific Information, Inc.Active, Pennsylvania 19104, United Kingdom
- Institute for Scientific InterchangeTurin, Italy
- Institute for Scintillation MaterialsUkraine
- Institute for Security and Cooperation in Space
- Institute for Security and Development PolicySweden
- Institute for Security Policy and LawSyracuse, United States
- Institute for Security StudiesSouth Africa
- Institute for Self-Government StudiesPalau Centelles, Spain
- Institute for Shipboard EducationActive, Dover, United States
- Institute for Signal Trust LtdActive (proposal to strike off), Other information service activities n.e.c., Newcastle, United Kingdom
- Institute for Simulation and TrainingUnited States
- Institute for Single CrystalsUkraine
- Institute for Small and Medium Industry of the Generalitat ValencianaSpain
- Institute for Small Business and EntrepreneurshipActive, Activities of other membership organizations n.e.c., Barnsley, United Kingdom
- Institute for Smarter GovernmentCambridge
- Institute for Social and Economic AnalysesPrague, Czech Republic
- Institute for Social and Economic ChangeBangalore
- Institute for Social and Economic ChangeActive, Bengaluru, India
- Institute for Social and Economic ChangeIndia
- Institute for Social and Economic Change Employees Provident Fund TrustActive, Bengaluru, India
- Institute for Social and Economic Change Gratuity Fund TrustActive, Bengaluru, India
- Institute for Social and Economic Research and PolicyUnited States
- Institute for Social and Environmental Transition - InternationalActive, since 2014
- Institute for Social AnthropologyVienna, Austria
- Institute for Social Banking
- Institute for Social Ecologyenvironment, United States
- Institute for Social Research and Cultural StudiesActive, Karnataka, since 2026
- Institute for Social Security and Services for State WorkersMexico
- Institute for Social-Ecological Researchadvancement of science and research, Frankfurt, Germany
- Institute for Sociology of Education of the Russian Academy of EducationRussia
- Institute for Software TechnologyCologne, Germany
- Institute for Solid State Physics and OpticsHungary
- Institute for Solid State Physics of the University of TokyoJapan
- Institute for Southern StudiesUnited States
- Institute for Space and Defense ElectronicsUnited States
- Institute for Space–Earth Environmental Research, Nagoya UniversityJapan
- Institute for Spatial DevelopmentBrno, Czech Republic
- Institute for Spatial PoliciesLjubljana, Slovenia
- Institute for Standardization of Serbia
- Institute for State and Local Governance
- Institute for State EffectivenessWashington, D.C., United States
- Institute for StatecraftFife, United Kingdom
- Institute for Stem Cell Biology and Regenerative MedicineIndia
- Institute for Strategic DialogueActive, Research and experimental development on social sciences and humanities, London, United Kingdom
- Institute for Strategic DialogueLondon, United Kingdom
- Institute for Strategy and ReconciliationWashington, D.C., North Korea
- Institute for Student AchievementUnited States
- Institute for Studies in Federalism
- Institute for Studies in Industrial DevelopmentNew Delhi, India
- Institute for Studies in Technology and Engineering Private LimitedStruck off, Maharashtra, since 2009
- Institute for Studies of Society, Economy and EnvironmentVietnam
- Institute for Studies of the Recent PastBulgaria
- Institute for Study Abroad, Inc.Active, Indianapolis, United States
- Institute for Study of the Jewish QuestionDissolved
- Institute for Supply ManagementTempe, United States
- Institute for Surface ChemistryStockholm, Sweden
- Institute for Sustainability and Innovation in Structural EngineeringCoimbra, Portugal
- Institute for Sustainable Agro-ecosystem Services, Graduate School of Agricultural and Life Sciences, The University of TokyoJapan
- Institute for Sustainable CommunitiesUnited States
- Institute for Sustainable Development and International Relationsother voluntary membership organizations (France), Paris, France
- Institute for Sustainable PhilanthropyActive, United Kingdom
- Institute for Sustainable TechnologiesPoland
- Institute for Sustainable Urban and Rural DevelopmentActive, Maharashtra, since 2026
- Institute for Systems BiologyActive, Olympia, United States
- Institute for Systems Engineering and ComputersPortugal
- Institute for Technical Physics and Materials ScienceHungary
- Institute for Technological ResearchSão Paulo, Brazil
- Institute for Technology and ManagementActive, Maharashtra, since 1992
- Institute for Technology and Management TrustActive, Mumbai, India
- Institute for Technology Assessment and Systems AnalysisKarlsruhe, Germany
- Institute for Telecommunication SciencesUnited States
- Institute for the Advancement of Vedic MathematicsActive, United Kingdom
- Institute for the Blind and Partially SightedInstitute for the Blind, Copenhagen, Denmark
- Institute for the Blind Francesco CavazzaItaly
- Institute for the Development of the Lower Valley of the Negro RiverArgentina
- Institute for the Elderly and Social ServicesMadrid, Spain
- Institute for the Future of WorkActive, Other education n.e.c., London, United Kingdom
- Institute for the History of Ancient CivilizationsPeople's Republic of China
- Institute for the History of Arabic ScienceSyria
- Institute for the History of Natural Sciences, Chinese Academy of SciencesPeople's Republic of China
- Institute for the History of Science, Polish Academy of SciencesStaszic Palace, Poland
- Institute for the Intellectual Development of Children and Young AdultsIran
- Institute for the International Education of StudentsActive, Chicago, United States
- Institute for the Investigation of Communist Crimes in RomaniaSector 2, Romania
- Institute for the Languages of FinlandKluuvi, Finland
- Institute for the Management of Information SystemsActive, Activities of professional membership organizations, Swindon, United Kingdom
- Institute for the Meat and Dairy IndustryBelarus
- Institute for the Physics and Mathematics of the UniverseKashiwa, Japan
- Institute for the Protection and Security of the CitizenItaly
- Institute for the Protection of Cultural Heritage of SloveniaSlovenia
- Institute for the Protection of Cultural Monuments of Kosovoarchaeology, Pristina, Kosovo
- Institute for the Psychological Scienceshigher education, United States
- Institute for the Secularisation of Islamic Society
- Institute for the Serbian Language of SASASerbia
- Institute for the State and the Law - Bulgarian Academy of SciencesBulgaria
- Institute for the Struggle against the Dangers of Tobacco
- Institute for the Studies on Free Flow of InformationIndonesia
- Institute for the Study of Academic RacismUnited States
- Institute for the Study of American Cultures
- Institute for the Study of Global Antisemitism and PolicyUnited States
- Institute for the Study of Human KnowledgeActive, Santa Clara County, California, United Kingdom
- Institute for the Study of Human KnowledgeUnited States
- Institute for the Study of International MigrationWashington, D.C., United States
- Institute for the Study of Islamic Thought and CivilizationsSouth Jakarta, Indonesia
- Institute for the Study of Japanese Folk Culture, Kanagawa UniversityJapan
- Institute for the Study of ReligionsPoland
- Institute for the Study of Secularism in Society and Culture
- Institute for the Study of Societies and KnowledgeSofia, Bulgaria
- Institute for the Study of the Ancient WorldUnited States
- Institute for the Study of the Judiciary, Politics & the Media
- Institute for the Study of the USSRDissolved, Germany
- Institute for the Study of Totalitarian RegimesPrague, Czech Republic
- Institute for the Study of Urologic DiseasesThessaloniki, Greece
- Institute for the Study of Violent GroupsUnited States
- Institute for the Study of WarWashington, D.C., United States
- Institute for the Translation of Hebrew Literaturevoluntary association, Tel Aviv, Israel
- Institute for Theology and PeaceGermany
- Institute for Theoretical Atomic, Molecular and Optical PhysicsUnited States
- Institute for Theoretical Computer SciencePeople's Republic of China
- Institute for TourismCroatia
- Institute for Tourism Development ResearchVietnam
- Institute for Trade and Investment
- Institute for Traditional MedicineIquitos, Peru
- Institute for Traffic Accident Research and Data AnalysisJapan
- Institute for Trafficked, Exploited, and Missing PersonsGuatemala
- Institute for Transportation and Development PolicyNew York City, United States
- Institute for Transtextual and Transcultural StudiesFrance
- Institute for Transuranium ElementsGermany
- Institute for Tropical Biology and ConservationMalaysia
- Institute for TurnaroundActive, Activities of professional membership organizations, London, United Kingdom
- Institute for Unification EducationSouth Korea
- Institute for Urban and Transportation StudiesActive, Madhya Pradesh, since 2015
- Institute for Urban Design
- Institute for Vegetable GrowingDissolved, olericulture, research, Samachvalavičy, Belarus
- Institute for Virus Research, Kyoto UniversityDissolved, Japan
- Institute for Voluntary Action ResearchActive, Research and experimental development on social sciences and humanities, London, United Kingdom
- Institute for Waldorf EducationGermany
- Institute for Water of the Republic of SloveniaSlovenia
- Institute For Wealth Holdings, Inc.Active, Dover, United States
- Institute for WomenMadrid, Spain
- Institute for Women's Leadership
- Institute for Women's Policy Researchresearch, George Washington University, United States
- Institute for Women, Gender and Development StudiesSuriname
- Institute for Work and HealthToronto, Canada
- Institute for World CulturesParis, France
- Institute For World Spiritual Heritage auf Deutsch: Institut für spirituelles WeltkulturerbeActive, Wien, Austria
- Institute for Youth WorkActive, United Kingdom
- Institute for Zionist StrategiesJerusalem, Israel
- Institute GiprostroymostRussia
- Institute H21Prague, Czech Republic
- Institute IMDEA NetworksLeganés, Spain
- Institute Incubation & Innovation Council (I3c)-Iit JammuActive, Jammu and Kashmir, since 2021
- Institute IT Solutions LLPActive, Uttar Pradesh
- Institute Menezes BraganzaIndia
- Institute Neurotherapy FederationActive, Delhi, since 2025
- Institute of Academic and Technical Development Private LimitedActive, Delhi, since 2013
- Institute of Accelerated Learning LLPActive, Tamil Nadu
- Institute of Accountants and BookkeepersActive, Activities of professional membership organizations, London, United Kingdom
- Institute of Accounting and Commerce
- Institute of Accounting and Management LLPActive, since 2026
- Institute of Accounting Technicians in Ireland Limited - theActive, Belfast, United Kingdom
- Institute of Accounting, Auditing and Business TaxationSlovenia
- Institute of AcousticsPeople's Republic of China
- Institute of Acoustics Limited (The)Active, Activities of professional membership organizations, Milton Keynes, United Kingdom
- Institute of ActuariesDissolved, United Kingdom
- Institute of Actuaries of FranceFrance
- Institute of Actuaries of IndiaActive, Navi Mumbai, India
- Institute of Administration DevelopmentThailand
- Institute of Administrative ManagementActive, Management consultancy activities other than financial management, Holmfirth, United Kingdom
- Institute of Administrative ManagementLondon
- Institute of Advance Careers India Private LimitedActive, Delhi, since 2016
- Institute of Advance Durology and Renal TransplantActive, Kozhikode, India
- Institute Of Advance Network TechnologyPune
- Institute of Advanced Biosciences, Tokai UniversityJapan
- Institute of Advanced Energy, Kyoto UniversityJapan
- Institute of Advanced Hair and Beautyacademy Private LimitedActive, Karnataka, since 2018
- Institute of Advanced Management and Research (IAMR), GhaziabadGhaziabad district, India
- Institute of Advanced Media Arts and SciencesJapan
- Institute of Advanced Medical Research & Innovations ForumActive, Telangana, since 2019
- Institute of Advanced Medical Studies Private LimitedActive, Gujarat, since 2005
- Institute of Advanced MotoristsUnited Kingdom, United Kingdom
- Institute of Advanced Motorists Limited(the)Active, Driving school activities, Welwyn Garden City, United Kingdom
- Institute of Advanced Studies for Science and Technologyadministration publique générale, Paris, France
- Institute of Advanced Studies in AdministrationVenezuela
- Institute of Advanced Studies in Education, ChuruIndia
- Institute of Advanced Studies Ineducation of GVM FoundationActive, Rajasthan, since 2018
- Institute of Advanced Studies KőszegHungary
- Institute of Advanced Studies of the University of São PauloBrazil
- Institute of Advanced Studies ViennaVienna, Austria
- Institute of Advanced StudyUnited Kingdom
- Institute of Advanced Virology, KeralaIndia
- Institute of Aerial GeodesyKaunas, Lithuania
- Institute of Aeronautical EngineeringIndia
- Institute of Aeronautical Engineering & Technology Private LimitedActive, Uttar Pradesh, since 2019
- Institute of Aeronautical Tradesflight, Nouaceur, Morocco
- Institute of Aesthetic Medicine & Cosmetology Private LimitedActive, Maharashtra, since 2023
- Institute of Aesthetics Ayurveda & Paramedics LLPActive, Maharashtra
- Institute of African Studies University of GhanaGhana
- Institute of Agricultural and Environmental SciencesEstonia
- Institute of Agricultural and Environmental SciencesEstonia
- Institute of Agricultural and Food Biotechnologybuilding of Institute of Agricultural and Food Biotechnology, Poland
- Institute of Agricultural Biodiversity and Rural DevelopmentSpain
- Institute of Agricultural Science Private LimitedStruck off, Kerala, since 1997
- Institute of Agricultural SciencesSpain
- Institute of Agricultural Sciences of the Federal University of Minas GeraisBrazil
- Institute of Agricultural Sciences of the Federal University of UberlândiaBrazil
- Institute of Agricultural Sciences, Banaras Hindu UniversityIndia
- Institute of Agricultural Zoology, VenezuelaVenezuela
- Institute of Agriculture and Environment, Estonian Agricultural University, Tartu
- Institute of Agriculture and ForestryPuławy, Poland
- Institute of Agriculture of Carpathian Region of National Academy of Agrarian Sciences of UkraineUkraine
- Institute of Agro-Ecology and Land ManagementUkraine
- Institute of Agrobiotechnology of the LitoralArgentina
- Institute of Air Quality Management
- Institute of Alcohol StudiesActive, Other social work activities without accommodation n.e.c., London, United Kingdom
- Institute of Algological ResearchJapan
- Institute of All Nations for Advanced Studies
- Institute of Allied Health Sciences Private LimitedStruck off, Gujarat, since 2009
- Institute of Amateur Cinematographers Limited(the)Active, Other information service activities n.e.c., Newcastle Upon Tyne, United Kingdom
- Institute of American Studies, Chinese Academy of Social Sciences
- Institute of Analytical ChemistryBrno, Czech Republic
- Institute of Analytical SciencesFrance
- Institute of Analytics Private LimitedActive, Tamil Nadu, since 2015
- Institute of Anatomy in IașiRomania
- Institute of Ancient Gemology Private LimitedStruck off, Delhi, since 2014
- Institute of Ancient History of the Chinese Academy of Social SciencesPeople's Republic of China
- Institute of Ancient Near Eastern StudiesGermany
- Institute of Animal and Plant Quarantine (
- Institute of animal biology NAASUkraine
- Institute of Animal Physiology and GeneticsLiběchov, Czech Republic
- Institute of Animal SciencePrague, Czech Republic
- Institute of Animal SciencesPeople's Republic of China
- Institute of Animal Technology(the)Active, Other education n.e.c., Oxford, United Kingdom
- Institute of AnthropologyVietnam
- Institute of Anthropology: Interdisciplinary Studies on Human Dignity and CareItaly
- Institute of AntonianoBologna, Italy
- Institute of Applied BiochemistryRussia
- Institute of Applied Biotechnologies a.s.Active, Praha, Czech Republic
- Institute of Applied Computer SciencePoland
- Institute of Applied DermatologyActive, Kerala, since 1999
- Institute of Applied EcologyPeople's Republic of China
- Institute of Applied Economic ResearchBrasília, Brazil
- Institute of Applied EngineeringMorocco
- Institute of Applied Health and Sciences
- Institute of Applied Law and Legal Manag Emnet Private LimitedStruck off, Delhi, since 2003
- Institute of Applied LinguisticsPoland
- Institute of Applied Mathematics and Mechanics of the National Academy of Sciences of UkraineUkraine
- Institute of Applied Medicines and Research(IAMR), Ghaziabad
- Institute of Applied Physicsresearch and development, research, Belarus
- Institute of Applied PhysicsGeorgia
- Institute of Applied Physics and Computational MathematicsPeople's Republic of China
- Institute of Applied Physics, National Academy of Sciences of UkraineUkraine
- Institute of Applied Problems of Physics of National Academy of Sciences of ArmeniaArmenia
- Institute of Applied Radiation Chemistry of Lodz University of TechnologyPoland
- Institute of Applied ScienceActive, Kerala, since 1983
- Institute of Applied Sciences RuhengeriRwanda
- Institute of Applied Social ResearchJerusalem, Israel
- Institute of Aquaculture Torre de la SalCabanes, Spain
- Institute of Arab ManuscriptsEgypt
- Institute of Arab Research and StudiesEgypt
- Institute of Arbitration and MediationActive, Maharashtra, since 2004
- Institute of Archaeologists of Ireland
- Institute of ArchaeologyUnited Kingdom
- Institute of Archaeology and Anthropology of AzerbaijanBaku, Azerbaijan
- Institute of Archaeology and Art HistoryCluj-Napoca, Romania
- Institute of Archaeology and Ethnography of National Academy of Sciences of ArmeniaArmenia
- Institute of Archaeology of Slovak Academy of SciencesSlovakia
- Institute of Archaeology of the Czech Academy of SciencesPrague, Czech Republic
- Institute of Archaeology of the Czech Academy of Sciences, Brnoresearch, Brno, Czech Republic
- Institute of Archaeology, Chinese Academy of Social SciencesPeople's Republic of China
- Institute of ArcheologySoviet Union
- Institute of Architects - Glasgow Chapter of the Royal Incorporation of Architects in ScotlandActive, Glasgow, United Kingdom
- Institute of Architects BangladeshSher-e-Bangla Nagar, Bangladesh
- Institute of Architecture and ConstructionKaunas, Lithuania
- Institute of Architecture and Urbanism of the University of São PauloBrazil
- Institute of Architecture of Textiles of Lodz University of TechnologyPoland
- Institute of Architecture of the University of Applied Sciences in NysaPoland
- Institute of Archival ScienceGerman Democratic Republic
- Institute of Arctic and Alpine ResearchUnited States
- Institute of Arctic BiologyUnited States
- Institute of Aromatherapy RamashantiActive, Tamil Nadu, since 1999
- Institute of Art - London LimitedActive, Post-secondary non-tertiary education, London, United Kingdom
- Institute of Art and IdeasUnited Kingdom
- Institute of Art Education of the Russian Academy of EducationDissolved, Soviet Union
- Institute of Art History of the Czech Academy of Sciencesresearch, Czech Republic
- Institute of Art History, Goethe-University FrankfurtGermany
- Institute of Art History, Philipps-Universität MarburgGermany
- Institute of Art of ArmeniaYerevan, Armenia
- Institute of Art StudiesBulgaria
- Institute of Art StudiesUzbekistan
- Institute of Art, Polish Academy of SciencesPoland
- Institute of Artificial Intelligence and Research FoundationActive, Uttar Pradesh, since 2026
- Institute of Artificial Intelligence Problems of the Ministry of Education and Science of Ukraine and the National Academy of Sciences of UkraineUkraine
- Institute of Artistic CultureDissolved, Russia
- Institute of Arts of Moscow State Pedagogical UniversitySoviet Union
- Institute of Arts, Tokai UniversityDissolved
- Institute of Aryan Medicine LimitedDissolved, Maharashtra, since 1948