

| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| GRANITE | Gestion du Renseignement et ANalyse des Informations Transmises par les Équipes | In French | → Software → Military affairs | 
| GRASS | Groupe d'Analyse du Social et de la Sociabilité | In French | → Research institutes → Sociology | 
| GRC | Gestion de la Relation Client = CRM | Customer Relationship Management | In English | In French | → Economics | 
| GRC | Gendarmerie Royale du Canada | In French | → Police → Canada | 
| GRCE | Groupe de Recherche en Communication Écrite | In French | → Research institutes | 
| GRCE | Groupe national de Recherche en Communication Écrite | In French | → Document processing | 
| GRD | Gestionnaire du Réseau de Distribution | In French | → Energy economics | 
| GREAH | Groupe de Recherche en Électrotechnique et Automatique du Havre | In French | → Research institutes → Electrical engineering | 
| GRECO | Groupement d'Études Coordonnées | In French | → Organizations and associations | 
| GREE | Groupe Régional d'Étude de l'Emploi | In French | → Personnel management | 
| GREG | Groupement de Recherche et d'Études sur le Génome | In French | → Genetics | 
| GREMI | Groupe de Réflexion sur l'Enseignement des Méthodologies de l'Information | In French | → Organizations and associations → Libraries → Education | 
| GREP | Groupe de Recherche et d'Exploration Profonde | In French | → Firefighting | 
| GRESICO | Groupe d'Étude en Santé, Travail, Information et Comportements | In French | → Sociology → Labour, labour economics → Medicine | 
| GRETh | Groupement pour la Recherche sur les Échangeurs Thermiques | In French | → Applied sciences, technology | 
| GRETIA | Génie des Réseaux de Transport et Informatique Avancée | In French | → Computer science → Transport and postal services | 
| GRETSI | Groupement de Recherche en Traitement du Signal et de l'Image | In French | → Research institutes → Computer-based techniques | 
| GREXI | GRoupe d'EXploitation Informatique | In French | → Computer science | 
| GREZ | Groupe de Recherches et d'Études sur le Zen | In French | → Philosophy, psychology | 
| GRH | Gestion des Ressources Humaines | In French | → Personnel management | 
| GRI | Groupement de Recueil de l'Information | In French | → Military affairs | 
| GRIB | Groupement des Radios Indépendantes en Belgique | In French | → Organizations and associations → Telecommunications | 
| GRIM | Groupe de Recherche en Informatique et Mathématiques | In French | → Organizations and associations → Computer science → Mathematics | 
| GRIMP | Groupe de Recherche et d'Intervention en Milieu Périlleux | In French | → Firefighting | 
| GRISELI | Dispositif National d'Accès à la Littérature Grise | In French | → Knowledge management → Libraries | 
| GRM | Garde Républicaine Mobile | In French | → Police | 
| GRMC | Groupement de Radiodiffusion Monégasque | In French | → Telecommunications | 
| GRP | Grande Gandonnée de Pays | In French | → Sport, physical exercises | 
| GRPS | Groupement Régional de Promotion de la Santé | In French | → Organizations and associations → Medicine | 
| GRRT | Groupement Régional Nord Pas-de-Calais pour la Recherche dans les Transports | In French | → Organizations and associations → Transport and postal services | 
| GRS | Gymnastique Rythmique et Sportive | In French | → Sport, physical exercises | 
| GRSD | Groupe de Résolution de Situations Dangereuses | In French | |
| GRT | Gestionnaire du Réseau de Transport | In French | → Energy economics | 
| GRTE | Gestionnaire du Réseau de Transport Électricité | In French | → Energy economics | 
| GrUB | Groupe d'utilisateurs borains | In French | → Organizations and associations → Operating systems | 
| GSE | Générateur Standard d'Écritures | In French | → Computer science → Accounting | 
| GSI | Génie des Systèmes Industriels | In French | → Mechanical engineering → Electrical engineering | 
| GSI | Groupe de Solidarité et d'Intervention | In French | → Anarchist organizations | 
| GSIGN | Groupement de Sécurité et d'Intervention de la Gendarmerie Nationale | In French | → Police → Law, jurisprudence | 
| GSIT | Groupement pour un Système Interbancaire de Télécompensation | In French | → Banks | 
| GSO | Gaz du Sud-Ouest | In French | → Energy economics | 
| GSPC | Groupe Salafiste pour la Prédication et le Combat | In French | → Islam → Political parties and movements | 
| GSRH | Gestion Stratégique des Ressources Humaines | In French | → Higher education, universities → Labour, labour economics | 
| GSS | (Syndrome de) Gertsman-Straüssler-Scheinker | In French | → Pathology | 
| GTB | Gestion Technique de Bâtiment | In French | → Construction | 
| GTE | Génie Thermique et Énergie | In French | → Thermodynamics → Energy economics | 
| GTE | Groupe Technique Électricité | In French | → Electrical engineering | 
| GTF | Groupement des Transporteurs Français | In French | → Organizations and associations → Transport and postal services → France | 
| GTG | Groupe Technique Gaz | In French | → Energy economics | 
| GTi | Groupe de Travail interministériel | In French | → Central administration | 
| GTM | Genre, Travail, Mobilités | In French | → Sociology | 
| GTPB | Groupe de Traitement de la Parole et de Biométrie | In French | → Computer-based techniques → Linguistics | 
| GTR | Génie des Télécommunications et des Réseaux | In French | → Networks, communication → Telecommunications | 
| GTR | Groupe des Transporteurs Routiers | In French | → Organizations and associations → Transport and postal services | 
| GTRR | Gestion en Temps Réel du Réseau | In French | → Energy economics | 
| GTVE | Groupe de Travail sur la Vérification Environnementale | In French | → 5023 → Threats to the environment | 
| GU | Groupement d'Usines | In French | → Industry, industrial policy | 
| GU4L | Groupe des Utilisateurs de Logiciels Libres Léo Lagrange | In French | → Organizations and associations → Software | 
| GUITARES | GUIde de la TArification du RÉSidentiel | In French | → Prices → Energy economics | 
| GUL | Groupes d'Utilisateurs de Linux = LUG | Linux Users' Groups | In English | In French | → Organizations and associations → Operating systems | 
| GULAT | Groupe d'utilisateur de Linux de l'Abitibi-Témiscamingue | In French | → Organizations and associations → Operating systems | 
| GULG | Groupe des Utilisateurs du Libre en Guyane | In French | → Organizations and associations → Software | 
| GULiDef | Groupe des Utilisateurs de Linux dans la Défense | In French | → Organizations and associations → Operating systems → Military engineering | 
| GULLH | Groupe des Utilisateurs de Logiciels Libres au Havre | In French | → Organizations and associations → Software | 
| GULLIVER | Groupe des Utilisateurs de Linux et des Logiciels libres d'Ille et Vilaine et Environs de Rennes | In French | → Software → Operating systems | 
| GuLSE | Groupe des Utilisateurs Linux de Saint-Eustache et des environs | In French | → Organizations and associations → Operating systems | 
| GULUQ | Groupe d'Utilisateurs Linux de l'Université du Québec | In French | → Organizations and associations → Operating systems → Higher education, universities → Canada | 
| GULUS | Groupe d'utilisateurs de Linux de l'Université de Sherbrooke | In French | → Organizations and associations → Operating systems | 
| GUML | Groupement des Utilisateurs Mauriciens de Linux | In French | → Organizations and associations → Operating systems | 
| GUS | Groupe d'Ultime Secours | In French | → Accidents, risks, safety | 
| GVN | Grand Versailles Numérique (www.gvn.chateauversailles.fr) | In French | → Museums → Computer simulation → France | 
| H | Histidine = H | Histidine | In English = H | Histidin | In Bosnian = H | Histidina | In Catalan = H | Histidin | In Czech = H | Histidin | In German = H | Histidina | In Spanish = H | Histidino | In Esperanto = H | 히스티딘 | In Korean = H | Histidin | In Croatian = H | Histidin | In Indonesian = H | Istidina | In Italian = H | היסטידין | In Hebrew = H | Histidīns | In Latvian = H | Histidin | In Letzeburgesh = H | Histidinas | In Lithuanian = H | Hisztidin | LU = H | Histidine | In Dutch = H | ヒスチジン | In Japanese = H | Histidin | In Norwegian = H | Histydyna | In Polish = H | Histidina | In Portuguese = H | Гистидин | In Russian = H | Histidiini | In Finnish = H | Histidin | In Swedish = H | Histidin | In Turkish = H | Гістидин | In Ukrainian = H | 組氨酸 | In Chinese | In French | → Biochemistry, biophysics | 
| H | Hydrogène = H | Waterstof | In Afrikaans = H | هيدروجين | In Arabic = H | Hidróxenu | In Asturian = H | Hidrogen | In Azerbaijani = H | Wassastoff | In Austro-Bavarian = H | Вадарод | In Belarusian = H | Водород | In Bulgarian = H | হাইড্রোজেন | In Bengali = H | Hidrogen | In Breton = H | Vodonik | In Bosnian = H | Hidrogen | In Catalan = H | Idroheno | In Cebuano = H | Idrogenu | In Corsican = H | Vodík | In Czech = H | Водород | In Chuvash = H | Hydrogen | In Welsh = H | Brint | In Danish = H | Wasserstoff | In German = H | Υδρογόνο | In Greek = H | Hydrogen | In English = H | Hidrogeno | In Esperanto = H | Hidrógeno | In Spanish = H | Vesinik | In Estonian = H | Hidrogeno | In Basque = H | هیدروژن | In Persian = H | Vety | In Finnish = H | Hydrogen | In Faroese = H | Idrogjen | In Friulian = H | Hidrigin | In Irish = H | Haidreagain | In Scottish Gaelic = H | Hidróxeno | In Galician = H | હાઈડ્રોજન | In Gujarati = H | מימן | In Hebrew = H | हाइड्रोजन | In Hindi = H | Vodik | In Croatian = H | Idwojèn | In Haitian Creole = H | Hidrogén | In Hungarian = H | Ջրածին | In Armenian = H | Hydrogeno | In Interlingua = H | Hidrogen | In Indonesian = H | Hidrogeno | In Ido = H | Vetni | In Icelandic = H | Idrogeno | In Italian = H | 水素 | In Japanese = H | წყალბადი | In Georgian = H | អ៊ីដ្រូសែន | In Khmer (Cambodian) = H | ಜಲಜನಕ | In Kannada = H | 수소 | In Korean = H | Hîdrojen | In Kurdish = H | Hydrogenium | In Latin = H | Waasserstoff | In Letzeburgesh = H | Waterstof | In Limburgish = H | Idrògen | In Lombard = H | Idrojɛ́ní | In Lingala = H | Vandenilis | In Lithuanian = H | Ūdeņradis | In Latvian = H | Hauwai | In Māori = H | Водород | In Macedonian = H | ഹൈഡ്രജന് | In Malayalam = H | Устөрөгч | In Mongolian = H | हायड्रोजन | In Marathi = H | Hidrogen | In Malay = H | Āyōcoxqui | En Nahuatl = H | Waterstoff | In Low German = H | Waterstof | In Dutch = H | Hydrogen | In Nynorsk = H | Hydrogen | In Norwegian = H | Hidrogene | NOV = H | Idrogèn | In Occitan = H | Hiidrojen | In Pitcairn-Norfolk = H | Wodór | In Polish = H | Hidrogénio | In Portuguese = H | Yakuchaq | In Quechua = H | Hidrogen | In Romanian = H | Водород | In Russian = H | हाइड्रोजन | In Sanskrit = H | Idrògginu | In Sicilian = H | Vodik | In Serbo-Croatian = H | Vodík | In Slovak = H | Vodik | In Slovenian = H | Hidrogjeni | In Albanian = H | Водоник | In Serbian = H | Hidrogén | In Sundanese = H | Väte | In Swedish = H | Hidrojeni | In Swahili = H | ஹைட்ரஜன் | In Tamil = H | హైడ్రోజన్ | In Telugu = H | Ҳидроген | In Tajik = H | ไฮโดรเจน | In Thai = H | Idroheno | In Tagalog = H | Hidrojen | In Turkish = H | Водень | In Ukrainian = H | آبگر | In Urdu = H | Vodorod | In Uzbek = H | Hiđrô | In Vietnamese = H | Woaterstof | In Vlaams = H | Idrodjinne | In Walloon = H | 氢 | In Wu Chinese = H | היידראזשן | In Yiddisch = H | 氢 | In Chinese | In French | → Chemistry | 
| HADOPI | Haute Autorité pour la Diffusion des Oeuvres et la Protection des droits sur Internet | In French | → Central administration → Artistic property | 
| HAL | Hyper Articles en Ligne (http://hal.archives-ouvertes.fr) | In French | → Libraries → Research policy → France | 
| HALDE | Haute Autorité de Lutte contre les Discriminations et pour l'Égalité | In French | → Fundamental rights | 
| HAS | Haute Autorité de Santé | In French | → Medicine | 
| HAVL | (Déchets de) Haute Activité à Vie Longue | In French | → Nuclear technology | 
| HBM | Habitation à Bon Marché | In French | → Accommodation | 
| HC | Hors Concession | In French | |
| HC | Hors Classe | In French | |
| HCCI | Haut Conseil de la Coopération Internationale | In French | → Organizations and associations → International relations | 
| HCFC | Hydrochlorofluorocarbone | In French | → Chemistry → Chemical technology | 
| HCM | Hémoglobine Corpusculaire Moyenne = MCH | Mean Corpuscular Haemoglobin | In English | In French | → Diagnostics → Blood and circulatory system → Proteins | 
| HCSP | Haut Comité de la Santé Publique | In French | → Public health and hygiene | 
| HCSPF | Hors Consommation Supplémentaire Période Froide | In French | → Energy economics | 
| HCST | Haut Conseil de la Science et de la Technologie | In French | → Mathematics and natural sciences → Engineering, technology | 
| HDR | Habilitation à Diriger des Recherches | In French | → Research policy | 
| He | Hélium = He | Helium | In English = He | Helium | In German = He | Гелій | In Belarusian = He | Хелий | In Bulgarian = He | Heli | In Catalan = He | Helijum | In Czech = He | Eliu | In Corsican = He | হিলিয়াম | In Bengali = He | Heliwm | In Welsh = He | Ήλιο | In Greek = He | Helio | In Spanish = He | Heliumo | In Esperanto = He | هيليوم | In Arabic = He | Heelium | In Estonian = He | هلیوم | In Persian = He | הליום | In Hebrew = He | હીલિયમ | In Gujarati = He | Eli | In Friulian = He | Héiliam | In Irish = He | हीलियम | In Hindi = He | Elyòm | In Haitian Creole = He | Հելիում | In Armenian = He | Helín | In Icelandic = He | ヘリウム | In Japanese = He | ჰელიუმი | In Georgian = He | 헬륨 | In Korean = He | Hêlyûm | In Kurdish = He | Haumāmā | In Māori = He | Хелиум | In Macedonian = He | Eliyúmu | In Lingala = He | Éli | In Lombard = He | ഹീലിയം | In Malayalam = He | हेलियम | In Marathi = He | Хелијум | In Serbian = He | Гелий | In Russian = He | Heliu | In Romanian = He | Tōnatiuyoh | En Nahuatl = He | Ilyu | In Quechua = He | ஹீலியம் | In Tamil = He | Гелій | In Ukrainian = He | 氦 | In Chinese = He | Geliy | In Uzbek = He | ฮีเลียม | In Thai | In French | → Chemistry | 
| HE | Habitat Existant | In French | → Accommodation | 
| HEC | École des Hautes Études Commerciales du Maroc (www.hec.ac.ma) | In French | → Higher education, universities → Economics → Morocco | 
| HEC | École des Hautes Études Commerciales | In French | → Higher education, universities → Economics | 
| HECF | (École des) Hautes Études Comptables et Financières | In French | → Specialized or polytechnical colleges → Finance → Accounting → Morocco | 
| HECI | Hautes Études Commerciales et Informatiques (www.groupeheci.com) | In French | → Specialized or polytechnical colleges → Economics → Computer science | 
| HEEC | École des Hautes Études Économiques et Commerciales de Marrakech (www.ecoleheec.ac.ma) | In French | → Specialized or polytechnical colleges → Economics → Trade → Morocco | 
| HEGEL | Histoire, Enjeux Globaux, Écomobilité Locale | In French | → Transport and postal services | 
| HEI | Hautes Études Industrielles | In French | → Specialized or polytechnical colleges → Engineering, technology | 
| HEM | Institut des Hautes Études de Management (www.hem.ac.ma) | In French | → Specialized or polytechnical colleges → Computer science → Morocco | 
| HERISSON | Habile Extraction du Renseignement d'Intérêt Stratégique à partir de Sources Ouvertes Numérisées | In French | → Software → Military affairs | 
| HESSO | Haute École Spécialisée de Suisse Occidentale | In French | → Specialized or polytechnical colleges → Switzerland | 
| HET | Hypothèse extraterrestre = ETH | Extraterrestrial hypothesis | In English | In French | → Mathematics and natural sciences | 
| HGA | Histoire Générale de l'Afrique | In French | → Serial publications, periodicals → History | 
| HGPO | HyperGlycémie Provoquée par voie Orale | In French | → Endocrinology → Nutrition | 
| HHN | Hors Horaires Normaux | In French | → Labour, labour economics | 
| HI | Heure Imputée | In French | → Labour, labour economics | 
| HIC | Horaire Individuel Concerté | In French | → Personnel management | 
| HIX | Hors Incidents eXceptionnels | In French | → Accidents, risks, safety | 
| HLM | Habitation à Loyer Modéré | In French | → Accommodation | 
| HLM-O | Habitation à Loyer Modéré Ordinaire | In French | → Accommodation | 
| HOMES | Habitat et bâtiment Optimisé pour la Maîtrise de l'Énergie et les Services | In French | → Construction → Energy economics | 
| HP | Hôpital Psychiatrique | In French | → Psychiatry | 
| HPC | Haut Pouvoir de Coupure | In French | → Electrical engineering | 
| HPGM | Hôpital Gériatrique Les Magnolias | In French | → Medicine | 
| HPIC | Hors Pratique Industrielle Courante | In French | → Engineering, technology | 
| HQE | Haute Qualité Environnementale | In French | → Environmental technology, water supply, waste management | 
| HQE | Hors Quittancement Élaboré | In French | → Accounting | 
| HRP | Harmonie Royale Policière de Charleroi (http://hrp-charleroi.be) | In French | → Organizations and associations → Music → Police → Belgium | 
| HS | Heure Supplémentaire | In French | → Labour, labour economics → Personnel management | 
| HS | Hors Service | In French | |
| HSC | Hervé Schauer Consultants | In French | → Consulting → Computer science | 
| HSE | Heures Supplémentaires Effectives | In French | → Personnel management → Labour, labour economics | 
| HT | Haute Tension | In French | → Electrical engineering | 
| HT | Hors Taxes | In French | → Prices → Taxes, duties | 
| HTA | Hypertension artérielle = АГ | Артериальная гипертензия | In Russian | In French | → Physiology → Pathology | 
| HTAP | Hypertension Artérielle Pulmonaire = PAH | Pulmonalarterielle Hypertonie | In German = PH | Pulmonale Hypertonie | In German = PHT | Pulmonale Hypertonie | In German = HAP | Hipertensió Arterial Pulmonar | In Catalan = HTAP | Hipertensió Arterial Pulmonar | In Catalan = PH | Pulmonary Hypertension | In English = HTP | Hipertensión Pulmonar | In Spanish = PH | Pulmonale Hypertensie | In Dutch = ЛГ | Лёгочная гиперте́нзия | In Russian = PAH | Pulmonal Arteriel Hypertension | In Danish = HTP | Hipertensión Pulmonar | In Galician = ԹՀ | Թոքային հիպերտենզիա | In Armenian = PAH | Pulmonal Arteriell Hypertensjon | In Norwegian = PH | Plućna Hipertenzija | In Serbian = PAH | Pulmonell Arteriell Hypertension | In Swedish = PH | Pulmoner Hipertansiyon | In Turkish | In French | → Blood and circulatory system → Cardiology → Chest diseases | 
| HVP | Huile Végétale Pure | In French | → Agricultural sciences → Chemical technology | 
| I | Isoleucine = I | Isoleucine | In English = I | Isoleucina | In Catalan = I | Isoleucin | In Danish = I | Isoleucin | In German = I | Isoleucina | In Spanish = I | Izoleŭcino | In Esperanto = I | 이소류신 | In Korean = I | Izoleucin | In Croatian = I | Isoleusin | In Indonesian = I | Isoleucina | In Italian = I | איזולאוצין | In Hebrew = I | Izoleicīns | In Latvian = I | Isoleucin | In Letzeburgesh = I | Izoleucinas | In Lithuanian = I | Isoleucine | In Dutch = I | イソロイシン | In Japanese = I | Izoleucyna | In Polish = I | Isoleucina | In Portuguese = I | Изолейцин | In Russian = I | Isoleusiini | In Finnish = I | Isoleucin | In Swedish = I | İzolösin | In Turkish = I | Ізолейцин | In Ukrainian = I | 異亮氨酸 | In Chinese | In French | → Biochemistry, biophysics | 
| I-STEM | Institut des Cellules Souches pour le Traitement et l'Étude des Maladies Monogéniques | In French | → Biotechnology → Medicine | 
| I2TC | Incubateur Technologique Territorial de Corse (www.innovation.corse.fr) | In French | → Research policy | 
| I3C | Internet Créatif, Coopératif et Citoyen | In French | → Internet | 
| I3S | (Laboratoire d')Informatique, Signaux et Systèmes de Sophia Antipolis | In French | → Research institutes → Computer science → Telecommunications | 
| IA | Intelligence Artificielle = AI | Artificial Intelligence | In English = 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 | In French | → Artificial intelligence | 
| IA | Ingénieur d'Affaires | In French | |
| IA | Inspection Académique | In French | → Education | 
| IA | Inspecteur d'Académie | In French | → Education | 
| IAA | Industries Agricoles et Alimentaires | In French | → Agricultural sciences → Beverage industry → Food technology | 
| IAC | Institut Agronomique néo-Calédonien | In French | → Agricultural sciences | 
| IACE | Institut Arabe des Chefs d'Entreprise | In French | → Economics | 
| IACM | Interrupteur Aérien à Commande Mécanique | In French | → Electrical engineering → Mechanical engineering | 
| IACO | International Aviation COnsulting | In French | → 3592 → Aeronautics, aircraft | 
| IADE | Infirmièr(e)-Anesthésiste Diplômé(e) d'État | In French | → Anesthesiology | 
| IAE | Institut d'Administration des Entreprises | In French | → Management → Economics | 
| IAE | Institut d'Administration Économique | In French | → Specialized or polytechnical colleges → Public administration, government | 
| IAE | Intégration d'Applications d'Entreprise | In French | → Software | 
| IAI | Institut Africain d'Informatique | In French | → Specialized or polytechnical colleges → Computer science → Africa | 
| IALM | Institut des Arts, Lettres et Médias | In French | → Specialized or polytechnical colleges → Arts → Language, linguistics, literature → 70 | 
| IALS | International Association of Literary Semantics | In French | → Associations → Literature | 
| IANOR | Institut algérien de normalisation (www.ianor.org) | In French | → Standardization → Algeria | 
| IAO | Institut d'Asie Orientale | In French | → Language, linguistics, literature → Geography, biography, history | 
| IAO | Ingénierie Assistée par Ordinateur | In French | → Computer-based techniques → Engineering, technology | 
| IAP | Institut Algérien du Pétrole (www.iap.dz) | In French | → Specialized or polytechnical colleges → Mining → 665 → Algeria | 
| IAPR | Institut d'Accompagnement Psychologique et de Ressources (www.iapr.fr) | In French | → Psychology → France | 
| IAPS | Institut Auderghemois de Promotion Sociale | In French | |
| IAS | Interface d'Authentification Serveur | In French | → Networks, communication → Telecommunications | 
| IAS | Identification, Authentification et Signature | In French | → Computer science → Telecommunications | 
| IAT | Interrupteur Aérien Télécommandé | In French | → Electrical engineering | 
| IAURIF | Institut d'Aménagement et d'Urbanisme de la Région Île-de-France | In French | → Transport and postal services → Regional planning → France | 
| IAV | Institut Agronomique et Vétérinaire Hassan II (www.iav.ac.ma) | In French | → Specialized or polytechnical colleges → Agricultural sciences → Veterinary medicine → Morocco | 
| IBGE | Institut Bruxellois pour la Gestion de l'Environnement | In French | → Regional administration → Environmental protection → Environmental technology, water supply, waste management | 
| IBISC | Informatique, Biologie Intégrative et Systèmes Complexes | In French | → Computer science → Biological sciences | 
| IBL | Institut de Biologie de Lille | In French | → Research institutes → Biological sciences → France | 
| IBN | Institut Belge de Normalisation (www.ibn.be) = BIN | Belgisch Instituut voor Normalisatie | In Dutch | In French | → Standardization → Belgium | 
| IBS | Institut de Biologie Structurale | In French | → Biochemistry, biophysics | 
| IBTP | Institut des Bâtiments et des Travaux Publics | In French | → Specialized or polytechnical colleges | 
| ICA | Institut de Chimie de Annaba | In French | → Specialized or polytechnical colleges → Chemical technology → Chemistry | 
| ICA | Ingénieur du Contrôle Aérien | In French | → Aeronautics, aircraft → Transport and postal services | 
| ICAD | Institut des Cadres Dirigeants | In French | → Specialized or polytechnical colleges → Management | 
| ICADTS | International Council on Alcohol and Traffic Safety | In French | → Organizations and associations → Accidents, risks, safety → Transport and postal services | 
| ICALIN | Indicateur Composite des Activités de Lutte contre les Infections Nosocomiales = ICALIN | Indice Composite des Activités de Lutte contre les Infections Nosocomiales | In French | In French | → Statistics → Infectious diseases | 
| ICALIN | Indice Composite des Activités de Lutte contre les Infections Nosocomiales = (look above) | In French | → Statistics → Infectious diseases | 
| ICAM | Institut Catholique d'Arts et Métiers | In French | → Roman catholic church → Specialized or polytechnical colleges → Engineering, technology | 
| ICAME | Innovation Commerciale, Analyse des Marchés et de leur Environnement | In French | → Trade | 
| ICAN | Institut de Création et d'Animation Numériques | In French | → Specialized or polytechnical colleges → Graphic arts → Cinema, movies → Graphical processing | 
| ICAR | Incubateur de Champagne-Ardenne (www.icar-incubateur.fr) | In French | → Engineering, technology → France | 
| ICARE | Instrumentation, Commande et Architecture des Robots Évolués | In French | → Electronics | 
| ICARE | Informatique du CAlcul de RÉseau | In French | → Computer science | 
| ICARE | Installation Confinée d'Analyses et de Recherches Environnementales | In French | → Research institutes → Microbiology | 
| ICARE | Intelligence dans les CALculs de Recharge | In French | → Computer science | 
| ICAREX | Intelligence dans les CAlculs de Recharge en portage uniX | In French | → Computer science | 
| ICCOS | Infrastructures de Calcul, de COmmunications et Sécurité | In French | → Computer science → Telecommunications | 
| ICD | Instrument de Coopération au Développement | In French | → European Union | 
| ICE | Installation Centrale d'Entrepôt | In French | → Maintenance and logistics | 
| ICEDD | Institut de Conseil et d'Études en Développement Durable | In French | |
| ICEM | Institut Coopératif de l'École Moderne | In French | → Education | 
| ICES | International Council for Exploration of the Sea | In French | → Organizations and associations → Earth sciences → Zoology | 
| ICFE | Indemnité Compensatrice de Frais d'Études | In French | |
| ICFR | Inspection Comptable et Financière Régionale | In French | → Accounting → Finance | 
| ICFS | Indemnité Compensatoire de Frais Spéciaux | In French | → Finance → Labour, labour economics → Electrical engineering | 
| ICG | Institut Charles Gerhardt (www.icgm.fr) | In French | → Research institutes → Chemistry | 
| ICG | Intérêts Communaux Gesvois | In French | → Political parties and movements | 
| ICI | Information, Coordination, Incitation | In French | → Computer science | 
| ICI | Instrument de Coopération avec les pays Industrialisés | In French | → European Union | 
| ICMS | Information, Communication, Modélisation et Simulation (www.polytechnicum.org/icms/) | In French | → Higher education, universities → Computer-based techniques | 
| ICMS | Ingénierie et Contrôle des Matériaux et des Structures | In French | → Materials science → Mechanical engineering | 
| ICOMTEC | Institut de Communication et des Nouvelles Technologies (http://icomtec.univ-poitiers.fr) | In French | → Higher education, universities → Research institutes → Computer science → Telecommunications → France | 
| ICP | Institut Catholique de Paris (www.icp.fr) | In French | → Education → Roman catholic church → France | 
| ICP | Institut de la Communication Parlée | In French | → Language, linguistics, literature | 
| ICPE | Installation Classée pour la Protection de l'Environnement | In French | → Environmental protection | 
| ICPE | Installations Classées pour la Protection de l'Environement | In French | → Threats to the environment | 
| ICRA | Association de Classification du Contenu de l'Internet | In French | → Internet → Libraries → Associations |