

| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| HIVA | Higher Institute of Labour Studies | In English | → Sociology → Labour, labour economics | 
| HIVA | Hoger Instituut Van de Arbeid (www.hiva.be) | In Dutch | → Research institutes → Labour, labour economics → Politics → Belgium | 
| HIVOS | Humanistisch Instituut voor Ontwikkelingssamenwerking | In Dutch | → Organizations and associations → Development | 
| HiWorD | HIerarchical Workflow Designer | In English | → Computer-based techniques | 
| HIX | Hors Incidents eXceptionnels | In French | → Accidents, risks, safety | 
| HJAS | Harvard Journal of Asiatic studies | In English | → Serial publications, periodicals → Language, linguistics, literature → Geography, biography, history | 
| HJSC | Hommerts Jutrijpse Sport Club | In Dutch | → Organizations and associations → Sport, physical exercises | 
| HK | Housekeeping | In English | → 64 | 
| HK | Handknattleiksfélag Kópavogs (www.hk.is) | In Icelandic | → Organizations and associations → Sport, physical exercises | 
| HKC | Hansweert Kruiningen Combinatie | In Dutch | → Organizations and associations → Sport, physical exercises | 
| HKDS | Hrvatska Kršćanska Demokratska Stranka | In Croatian | → Political parties and movements | 
| HKDU | Hrvatska Kršćanska Demokratska Unija | In Croatian | → Political parties and movements | 
| HKEA | Honkonga Esperanto-Asocio | In Esperanto | → Associations → Artificial languages (linguistics) | 
| HKI | Hendrik Kraemer Instituut | In Dutch | → Organizations and associations | 
| HKI | Hans Knöll Institut (www.hki-jena.de) | In German | → Research institutes → Pathology → Pharmacology, toxicology → Infectious diseases → Germany | 
| HKI | Hollandsche Kunstzijde Industrie | In Dutch | → Netherlands | 
| HKIAC | Hong Kong International Arbitration Centre | In English | → Law, jurisprudence | 
| HKID | Hong Kong Identity Card | In English | |
| HKJEA | Honkonga Junulara Esperanto-Asocio = HKJEA | 香港の青年エスペラント団体です | In Japanese | In Esperanto | → Associations → Artificial languages (linguistics) | 
| HKJEA | 香港の青年エスペラント団体です = (look above) | In Japanese | → Organizations and associations | 
| HKK | Hare Koninklijke Hoogheid | In Dutch | |
| HKV | Hit-To-Kill Vehicle | In English | → Vehicle engineering | 
| HLA | Human Leucocyte Antigen | In English | → Biochemistry, biophysics | 
| HLAL | High-Level Assembler Language | In English | → Programming languages | 
| HLC | Hybrid Load Controller | In English | |
| HLCM | High-Level Control Module | In English | |
| HLLV | Heavy-Lift Launch Vehicle | In English | → Aeronautics, aircraft → Astronautics | 
| HLLW | High Level Liquid Waste | In English | → Environmental technology, water supply, waste management | 
| HLM | Habitation à Loyer Modéré | In French | → Accommodation | 
| HLM-O | Habitation à Loyer Modéré Ordinaire | In French | → Accommodation | 
| HLR | Home Location Register | In English | → Telecommunications | 
| HLTF | High Level Task Force | In English | |
| HLTL | High-Level Test Language | In English | → Programming languages | 
| HLV | Hybrid Launch Vehicule | In English | → Vehicle engineering | 
| HM | Honora Membro | In Esperanto | → Organizations and associations | 
| HM | Hinge Mount | In English | |
| HM | Handmaids of Mary | In English | → Roman catholic church | 
| HM | Hare Majesteit | In Dutch | |
| HMA | Hypergolic Maintenance Area | In English | → Maintenance and logistics → Astronautics | 
| HMB | Hard Mobile Basing | In English | |
| HMC | Hybrid Microcircuit | In English | → Electronics | 
| HMC | Haagse Marokkanen Chabab | In Dutch | → Organizations and associations → Sport, physical exercises → Netherlands | 
| HMCF | Hypergolic Maintenance and Checkout Facility | In English | → Maintenance and logistics → Astronautics | 
| HMD | Head-Mounted Device | In English | |
| HMD | Helmet-Mounted Display | In English | |
| HMF | Health Maintenance Facility | In English | → Medicine | 
| HMF | Horizontal Mating Facility | In English | |
| HMF | Hypergolic Maintenance Facility | In English | → Maintenance and logistics → Astronautics | 
| HML | Hard Mobile Launcher | In English | |
| HML | Hardened Mobile Launcher | In English | |
| HMM | Hidden Markov Models | In English | → Statistics → Mathematics | 
| HMMMMM | Holistic, Manipulative, Multi-modal and Mimetic, Musical and Mimetic | In English | → Music → Linguistics | 
| HMN | Humanities | In English | → Education → Language, linguistics, literature | 
| HMO | Health Maintenance Organization | In English | → Organizations and associations → Medicine | 
| HMONGIHRW | Hmong International Human Rights Watch | In English | → Organizations and associations → Human rights → Fundamental rights | 
| HMP | Hydrazine Monopropellant | In English | → Astronautics | 
| HMPAC | Helmet-Mounted Multipurpose Applications Control | In English | |
| HMPPA | Herbal Medicinal Products Platform Austria (www.hmppa.at) | In English | → Pharmacology, toxicology → Austria | 
| HMPV | Humanes Metapneumovirus | In German | → Virology → Infectious diseases | 
| HMR | Helgoland Marine Research | In English | → Serial publications, periodicals → 50146 → Hydrology | 
| HMS | Hazard Monitor System | In English | |
| HMS | Health Monitoring System | In English | → Medicine | 
| HMS | History Memory System | In English | |
| HMS | Houdt Moedig Stand | In Dutch | → Organizations and associations → Sport, physical exercises | 
| HMSH | Houdt Moedig Stand den Haag | In Dutch | → Organizations and associations → Sport, physical exercises | 
| HMT | Heat and Mass Transfer | In English | → Serial publications, periodicals → Thermodynamics | 
| HMTT | HUrricane Mesa Test Track | In English | |
| HMU | Hardware Mockup | In English | → Computer hardware | 
| HMV | Hydrogen Manual Valve | In English | |
| HMVV | Hooge Mierdense Voetbal Vereniging | In Dutch | → Organizations and associations → Football and rugby | 
| HN | Huñusqa Nasyunkuna = UN | Unuigintaj Nacioj | In Esperanto = ONU | Organisation des Nations Unies | In French = ONU | Organizazión d'as Nazions Unitas | In Aragonese = ААН | Арганіза́цыя Аб'ядна́ных На́цый | In Belarusian = VN | Verenigde Nasies | In Afrikaans = ONU | Organización de les Naciones Uníes | In Asturian = OOH | Организацията на обединените нации | In Bulgarian = ABU | Aozadur ar Broadoù Unanet | In Breton = ПНО | Пĕрлешнĕ Нацисен Организацийĕ | In Chuvash = FN | Feriene Naasjes | In Frisian = UN | United Nations | In English = NBE | Nazio Batuen Erakundea | In Basque = ONU | Organización das Nacións Unidas | In Occitan = UN | Unuiĝinta Naciaro | In Esperanto = UN | Ujedinjeni Narodi | In Bosnian = CN | Consociatio Nationum | In Latin = FN | Forenede Nationer | In Danish = UN | Unionita Nacioni | In Ido = ONU | Organizzazione delle Nazioni Unite | In Italian = KU | Kenedhlow Unys | In Cornish = ONU | Organització de les Nacions Unides | In Catalan = ΟΗΕ | Οργανισμός Ηνωμένων Εθνών | In Greek = ΗΕ | Ηνωμένα Έθνη | In Greek = ONU | Organización de las Naciones Unidas | In Spanish = VN | Vereinte Nationen | In German = VN | Verenigde Naties | In Dutch = VN | Vereent Natiounen | In Letzeburgesh = ООН | Организация Oбъединённых Hаций | In Russian = ONU | Organisacion des Nacions unies | In Franco-Provençal = ONZ | Organizacja Narodów Zjednoczonych | In Polish = BMT | Birlashgan Millatlar Tashkiloti | In Uzbek = ООН | Організація Об'єднаних Націй | In Ukrainian = BM | Birleşmiş Milletler | In Turkish = LHiQ | Liên Hiệp Quốc | In Vietnamese = OKB | Organizata e Kombeve të Bashkuara | In Albanian = OSN | Organizácia Spojených národov | In Slovak = OZN | Organizacija Združenih Narodov | In Slovenian = УН | Уједињене нације | In Serbian = FN | Förenta nationerna | In Swedish = UM | Umoja wa Mataifa | In Swahili = NU | Nazzioni Uniti | In Sicilian = ONU | Organizaţia Naţiunilor Unite | In Romanian = ONU | Organização das Nações Unidas | In Portuguese = VN | Vereenten Natschonen | In Low German = ST | Sameindu Tjóðir | In Faroese = PBB | Pertubuhan Bangsa-bangsa Bersatu | In Malay = NA | Náisiúin Aontaithe | In Irish = ÜRO | Ühinenud Rahvaste Organisatsioon | In Estonian = SÞ | Sameinuðu þjóðanna | In Icelandic | In Quechua | → International relations → United Nations | 
| HN | Hospital Neurológico | In Spanish | → Neurology | 
| HN | Hrvatski Narodnjaci | In Croatian | → Political parties and movements | 
| HNC | Heelsum Nederrijn Combinatie | In Dutch | → Organizations and associations → Sport, physical exercises → Netherlands | 
| HNC | Heistraat Nieuwevaart Combinatie | In Dutch | → Organizations and associations → Sport, physical exercises | 
| HNCO | High-Precision Numerical-Controlled Oscillator | In English | |
| HND | Higher National Diploma | In English | → Education | 
| HND | Hrvatski Nezavisni Demokrati | In Croatian | → Political parties and movements | 
| HND | Haneda Airport | In English | → Transport by air → Japan | 
| HND | Hmong National Development | In English | → Organizations and associations → Development | 
| HNMS | Hellenic National Meteorological Service | In English | → Meteorology, climatology → Greece | 
| HNO | Hals-, Nasen-, und Ohrenheilkunde | In German | → Pathology | 
| HNS | Hrvatska Narodna Stranka (www.hns.hr) | In Croatian | → Political parties and movements | 
| HOA | Hydroxylamine-oxydoreductase | In English | → Enzymes | 
| HOAC | Historians of American Communism | In English | → Organizations and associations → History → Communist parties → United States | 
| HOBt | Hydroxybenzotriazole | In English | → Chemistry → Chemicals | 
| HOBU | Hoger Onderwijs Buiten de Universiteit | In Dutch | → Higher education, universities | 
| HoD | Head(s) of Delegation | In English | → Management → Organizations and associations | 
| HODO | Hollandscheveld Overwint Door Oefening | In Dutch | → Organizations and associations → Sport, physical exercises → Netherlands | 
| HOE | Homing Optical Experiment | In English | |
| HOE | Homing Overlay Experiment | In English | |
| HOE | Holographic Optical Element | In English | → Optics | 
| HOFCO | Horizontal Functional Checkout | In English | → Engineering, technology | 
| HOL | High-Order Language | In English | → Programming languages | 
| HOL | High Order Language | In English | → Programming languages | 
| HOLAB | Holographic Laboratory Brassboard | In English | → Optics | 
| HOLAP | Hybrid On Line Analytical Processing | In English | → Knowledge management → Data | 
| HOLC | High-Order Language Computer | In English | → Computer hardware → Programming languages | 
| HOLIVAR | Holocene Climate Variability | In English | → Meteorology, climatology | 
| HOLWG | High Order Language Working Group | In English | → Organizations and associations → Programming languages | 
| HOM | Humanistisch Overleg Mensenrechten | In Dutch | → Organizations and associations → Fundamental rights | 
| HoMAI | Hologram Manufacturers Association of India | In English | → Associations → Optics | 
| HOME | Hawaii Ocean-Mixing Experiment | In English | → Marine research, oceanography | 
| HOMES | Habitat et bâtiment Optimisé pour la Maîtrise de l'Énergie et les Services | In French | → Construction → Energy economics | 
| HOMO | Highest Occupied Molecular Orbital | In English | → Chemistry | 
| HON | Health On the Net | In English | → Networks, communication → Medicine | 
| HOP | Hrvatski Oslobodilački Pokret | In Croatian | → Political parties and movements | 
| HOPE | Help Ohio Public Education | In English | → Education → United States | 
| HOPE | HIV Outreach Programm and Education | In English | → Education → Infectious diseases | 
| HOPE | Help Our People Excel (www.helpourpeopleexcel.net) | In English | → Social welfare | 
| HOPS | Holografisch-Optische Projektionsscheiben | In German | → Optics | 
| HOPS | Harvard Ocean Prediction System (http://mseas.mit.edu/archive/HOPS/) | In English | → Marine research, oceanography | 
| HORA | Hochwasserrisikoflächen Austria | In German | → Austria | 
| HOS | High-Order Software | In English | → Software | 
| HOS | Hybrid Operating System | In English | → Operating systems | 
| HOSC | HUntsville Operations SUpport Center | In English | → Applied sciences, technology | 
| HOST | Hardened Optical Sensor Test Bed | In English | → Applied sciences, technology | 
| HOTOL | Horizontal Takeoff and Landing | In English | → Astronautics | 
| HOV | Hoop Op Vooruitgang | In Dutch | → Organizations and associations → Sport, physical exercises | 
| HP | Honora Prezidanto | In Esperanto | → Organizations and associations | 
| HP | Handling Procedure | In English | → Engineering, technology | 
| HP | Hewlett-Packard | In English | → Computer science | 
| HP | Horsepower | In English | → Electrical engineering | 
| HP | Hydrogen Purge | In English | |
| HP | Perigee Altitude | In English | → Aeronautics, aircraft → Astronautics | 
| HP | Pressure Altitude | In English | |
| HP | Hewlett Packard | In English | → Computer hardware | 
| HP | Hrvatski Proljećari (www.hrvatski-proljecari.hr) | In Croatian | → Political parties and movements | 
| HP | Horse Power | In English | → Mechanical engineering | 
| HP | Hôpital Psychiatrique | In French | → Psychiatry | 
| HP-EIC | Hewlett-Packard European Innovation Centre | In English | → Computer science | 
| HP-HPP | Hrvatski Pravaši - Hrvatski Pravaški Pokret (www.hrvatskipravasi.hr) | In Croatian | → Political parties and movements | 
| HPA | Handling and Positioning Aid | In English | |
| HPA | High-Power Amplifier | In English | → Electrical engineering | 
| HPA | High-Power Antenna | In English | → Telecommunications | 
| HPAIR | Harvard Project for Asian and International Relations | In English | → International relations | 
| HPAU | High-Power Amplifier Unit | In English | |
| HPBRM | High Payload Baseline Reference Mission | In English | → Astronautics | 
| HPBW | Half-Power Beam Width | In English | |
| HPC | High Performance Computing | In English | → Computer science | 
| HPC | Corrected Pressure Altitude | In English | |
| HPC | Haut Pouvoir de Coupure | In French | → Electrical engineering | 
| HPCA | Hot Plasma Composition Analyzer | In English | → Plasma physics → Astronautics → Astronomy | 
| HPCC | High Performance Computing Cluster | In English | → Computer hardware | 
| HPCRE | Handbook on the Physics and Chemistry of Rare Earths | In English | → Serial publications, periodicals → Physics → Chemistry | 
| HPF | Highest Probable Frequency | In English | → Mathematics | 
| HPF | Horizontal Processing Facility | In English | |
| HPF | Holographic Photopolymer Film | In English | → Chemical technology → Plastic industry | 
| HPF | High Performance Fortran | In English | → Programming languages | 
| HPFT | High-Pressure Fuel Turbopump | In English | → Vehicle engineering | 
| HPFTP | High Pressure Fuel Turbopump | In English | |
| HPG | High-Pressure Gas | In English | |
| HPGL | Hewlett-Packard Graphics Language | In English | → Computer science | 
| HPGM | Hôpital Gériatrique Les Magnolias | In French | → Medicine | 
| HPGM | Hispanic Professionals of Greater Milwaukee Organization (www.hpgm.org) | In English | → Organizations and associations | 
| HPGS | High-Pressure Gas System | In English | |
| HPI | High-Performance Insulation | In English | |
| HPIC | Hors Pratique Industrielle Courante | In French | → Engineering, technology | 
| HPICS | Heat Pipe Instrumentation and Control System | In English | → Thermodynamics | 
| HPLC | High Performance Liquid Chromatography | In English | → Chromatography, mass spectrography | 
| HPlPh | Handbook of Plasma Physics | In English | → Serial publications, periodicals → Plasma physics | 
| HPLS | History and Philosophy of the Life Sciences | In English | → Philosophy, psychology → Biological sciences → Medicine → History | 
| HPM | Harvard Project Manager | In English | → Management | 
| HPM | High-Performance Motor | In English | → Mechanical engineering → Vehicle engineering | 
| HPM | High-Power Microwave | In English | |
| HPOL | High-Power Optics Laboratory | In English | → Research institutes → Optics | 
| HPOP | High-Pressure Oxidizer Pump | In English | |
| HPOT | High-Pressure Oxidizer Turbopump | In English | |
| HPOTP | High Pressure Oxidizer Turbopump | In English | |
| HPP | High Performance Polymers | In English | → Serial publications, periodicals → Materials science → Plastic industry | 
| HPPF | Horizontal Payloads Processing Facility | In English | → Astronautics | 
| HPPS | Human Plasma Product Services | In English | → Blood and circulatory system → Pharmacology, toxicology | 
| HPR | High Pressure Research | In English | → Serial publications, periodicals → Physics → Chemistry | 
| HPR | Hydrogen Pressure Regulator | In English | → Electrical engineering | 
| HPRV | Hydrogen Pressure Relief Valve | In English | → Electrical engineering | 
| HPS | Hydraulic Power System | In English | |
| HPS | Hemophagocytic syndrome | In English | → Blood and circulatory system → Pathology | 
| HPS | Hrvatska Pučka Stranka (www.hps.hr) | In Croatian | → Political parties and movements | 
| HPSG | Head-Driven Phrase Structure Grammar | In English | → Computer-based techniques → Linguistics | 
| HPSL | High Performance Smart Lid | In English | → Biological sciences | 
| HPSS | Hrvatska Pučka Seljačka Stranka | In Croatian | → Political parties and movements | 
| HPSV | Haagse Politie Sport Vereniging | In Dutch | → Organizations and associations → Police → Sport, physical exercises | 
| HPT | High-Pressure Test | In English | |
| HPT | Home Pregnancy Test | In English | → Obstetrics → Reproductive biology | 
| HPU | High-Power Unit | In English | |
| HPU | Hydraulic Power Unit | In English | |
| HPU | Hydraulic Propulsion Unit | In English | → Vehicle engineering | 
| HPU | Uncorrected Pressure Altitude | In English | |
| HPV | High-Pressure Valve | In English | |
| HQ | Headquarter(s) | In English | |
| HQ | Headquarter | In English | → Military affairs | 
| HQDA | Headquarters Department of the Army | In English | → Military affairs | 
| HQE | Haute Qualité Environnementale | In French | → Environmental technology, water supply, waste management | 
| HQE | Hors Quittancement Élaboré | In French | → Accounting | 
| HQL | Hibernate Query Language | In English | → 00043 → Data | 
| HR | Homologous Recombination | In English | → Genetics | 
| HR | Heat-Resistant | In English | → Thermodynamics | 
| HR | Historical Record | In English | → Records management | 
| HR | Hydrogen Relief | In English | |
| HR | Hrvatski Republikanci (www.republikanci.hr) | In Croatian | → Political parties and movements |