| VIDH | Virus Immunitarii Defectus Humanae = VIH | Virus de l'Immunodéficience Humaine | In French = HIV | Human Immunodeficiency Virus | In English = VIH | Virus d'Inmunodeficencia Humana | In Asturian = VIH | Vírus da imunodeficiência humana | In Portuguese = ŽIV | Žmogaus Imunodeficito Virusas | In Lithuanian = ХИВ | Хумане имунодефицијенције | In Serbian = MIV | Menslike Immuniteitsgebreksvirus | In Afrikaans = HIV | Humani Imunodeficientni Virus | In Slovenian = ВИЧ | Вирус иммунодефицита человека | In Russian = GIB | Giza Immunoeskasiaren Birusa | In Basque |
In Latin | → Virology → Immunology and allergy → Infectious diseases |
| VIDO | Vaccine and Infectious Disease Organization | In English | → Organizations and associations → Immunology and allergy → Infectious diseases |
| VIGS | Verworwe Immuniteitsgebreksindroom = AIDS | Acquired Immune Deficiency Syndrome | In English = SIDA | Syndrome d'Immuno-Déficience Acquise | In French = SIDA | Síndrome de Inmuno-Deficiencia Adquirida | In Occitan = SIDA | Sindromo di Imuno-Defekteso Aquirita | In Ido = AIDS | Akirita Imuno-Deficita Simptomaro | In Esperanto = SIDA | Sindrome d'inmunodefizienzia aquirita | In Aragonese = СПИН | Синдром на придобитата имунна недостатъчност | In Bulgarian = QİÇS | Qazanılmış İmmun Çatışmazlığı Sindromu | In Azerbaijani = SIDA | Síndrome d'Immunodeficiència Adquirida | In Catalan = HIES | Hartutako Immuno Eskasiaren Sindromea | In Basque = SIDA | Síndrome de Inmunodeficiencia Adquirida | In Spanish = SEIF | Siondróm Easpa Imdhíonachta Faighte | In Irish = AIDS | Annlochd Inneamh Dìon-Slàinte | In Scottish Gaelic = ՁԻԱՀ | Ձեռքբերովի Իմունային Անբավարվածության Համախտանիշ | In Armenian = SCDI | Syndromis Comparatis Defectu Immunitatis | In Latin = 에이즈 | 후천성 면역 결핍 증후군 | In Korean = შიდსი | შეძენილი იმუნური დეფიციტის სინდრომი | In Georgian = СИДА | Синдромот на стекнат имунолошки дефицит | In Macedonian = СИДА | синдром стеченог имунолошког дефицита | In Serbian = AIDS | Akvirírani imúnski deficítni sindróm | In Slovenian = СПИД | Синдром приобретённого иммунного дефицита | In Russian = SIDA | Sindromul Imunodeficienţei Autodobândite | In Romanian = UHCW | Unquy hark'aypa chaskisqa waqlliynin | In Quechua = SIDA | Síndrome da imunodeficiência adquirida | In Portuguese = AIDS | Hội chứng Suy giảm Miễn dịch Mắc phải | In Vietnamese = СНІД | Cиндром набутого імунодефіциту | In Ukrainian = AIDS | Alınğan İmmun Defisit Síndromı | In Tatar = UKIMWI | Upungufu wa Kinga Mwilini | In Swahili |
In Afrikaans | → Immunology and allergy → Infectious diseases |
| VIH | Virus d'Inmunodeficencia Humana = VIDH, HIV, ŽIV, ХИВ, MIV, ВИЧ, GIB (look above) |
In Asturian | → Virology → Immunology and allergy → Infectious diseases |
| VIH | Vírus da imunodeficiência humana = VIDH, HIV, ŽIV, ХИВ, MIV, ВИЧ, GIB (look above) |
In Portuguese | → Virology → Immunology and allergy → Infectious diseases |
| VIH | Virus de l'Immunodéficience Humaine = VIDH, HIV, ŽIV, ХИВ, MIV, ВИЧ, GIB (look above) |
In French | → Virology → Immunology and allergy → Infectious diseases |
| VIL | Vehicle Integration and Launch | In English | → Vehicle engineering |
| VIN | Veterinary Information Network (www.vin.com) | In English | → Organizations and associations → Veterinary medicine |
| VIP | Virtual Instance Port | In English | → Networks, communication → Telecommunications |
| VIP | Vasoaktives intestinales Peptid | In German | → Biochemistry, biophysics → Blood and circulatory system |
| VIRMP | Veterinary Internship Residency Matching Program | In English | → Education → Veterinary medicine |
| VISI | Vaccine Identification Standards Initiative (www.cdc.gov/nip/visi/) | In English | → Immunology and allergy |
| VISTAR | Visible Space Tracking and Reconnaissance | In English | → Astronomy → Spaceflight engineering, astronautics |
| VIT | Vehicle Integration Test | In English | → Vehicle engineering |
| VITE | Vienna IT Enterprises | In English | → Networks, communication → Telecommunications |
| VIU | Vehicle Interface Unit | In English | → Human-computer interaction → Vehicle engineering |
| VIVACE | Value Improvement through a Virtual Aeronautical Collaborative Enterprise | In English | → Aeronautics, aircraft |
| VIVIT | Vorarlberg Institute for Vascular Investigation and Treatment | In English | → Blood and circulatory system |
| VJTI | Veermata Jijabai Technological Institute | In English | → Specialized or (poly)technical colleges → Engineering, technology |
| VLF | Vertical Launch Facility | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| VLP | Virus-Like Particle | In English | → Virology → Medicine |
| VLPS | Vandenberg Launch Processing System | In English | → Spaceflight engineering, astronautics |
| VLR | Visitor Location Register | In English | → Telecommunications |
| VLS | Vandenberg Launch and Landing Site | In English | → Spaceflight engineering, astronautics |
| VLS | Vandenberg Launch Site | In English | → Spaceflight engineering, astronautics |
| VLS | Vertical Launch System | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| VLSIC | Very Large Scale Integrated Circuit | In English | → Electronics |
| VLSS | Verein der leitenden Spitalärzte der Schweiz = AMDHS | Association des Médecins Dirigeants d'Hôpitaux de Suisse | In French |
In German | → Associations → Medicine |
| VLSST | Vandenberg Launch Site Support Team | In English | → Spaceflight engineering, astronautics |
| VM | Voltmeter | In English | → Electrical engineering |
| VMCAS | Veterinary Medical College Application Service | In English | → Veterinary medicine |
| vMCJ | Variant de la Maladie de Creutzfeldt-Jakob | In French | → Neurology |
| VMD | Veterinary Medicines Directorate (www.vmd.gov.uk) | In English | → Central administration → Veterinary medicine |
| VMed | Vierteljahrschrift für Gerichtliche Medizin und Öffentliches Sanitätswesen | In German | → Serial publications, periodicals → Medicine |
| VMF | Veterinærmedicinsk Forening (www.studmedvet.dk) | In Danish | → Organizations and associations → Higher education, universities → Veterinary medicine |
| VMIS | Verkehrsmanagement und Informationssystem | In German | → Transport and postal services |
| VMLS | Veterinary Medical Libraries Section | In English | → Libraries → Veterinary medicine |
| VMPFC | Ventromedial Prefrontal Cortex | In English | → Anatomy |
| VMS | Velocity Measuring System | In English | → Vehicle engineering |
| VMS | Vehicle Management System | In English | → Vehicle engineering |
| VMSÖ | Verband für medizinischen Strahlenschutz in Österreich | In German | → Organizations and associations → Medicine |
| VNC | Vereniging Nederlandse Cementindustrie | In Dutch | → Organizations and associations → Building |
| VNF | Voies Navigables de France | In French | → Transport and postal services |
| VO | Space Vehicle Operations | In English | → Spaceflight engineering, astronautics |
| VO | Vehicle Operations | In English | → Vehicle engineering |
| VOA | Véhicule d'Observation de l'Artillerie | In French | → Automobile manufacturing → Military engineering |
| VÖB | Verband Österreichischer Beton- und Fertigteilwerke | In German | → Organizations and associations → Building |
| VOCP | Vehicle-Out-of-Commission Part | In English | → Vehicle engineering |
| VOG | Verein Österreichischer Gießereifachleute | In German | → Metallurgy |
| VOGUE | Vers l’Optimisation de la Gestion et de l’Utilisation de l’Énergie | In French | → Energy economics → Electrical engineering |
| VOIR | Venus Orbiting Imaging Radar | In English | → Astronomy → Spaceflight engineering, astronautics |
| VOM | Voltohmmeter | In English | → Electrical engineering |
| VOR | VHF Omnidirectional Radio Range | In English | → Telecommunications |
| VOR | Voice-Operated Relay | In English | → Telecommunications |
| VOR | Verkehrsbund Ost-Region | In German | → Transport and postal services |
| VOX | Voice-Operated Transmitter | In English | → Telecommunications |
| VÖZ | Vereinigung der Österreichischen Zementindustrie (www.zement.at) | In German | → Organizations and associations → Building |
| VPD | Variable Power Divider | In English | → Energy economics → Electrical engineering |
| VPE | Véhicules Propres et Économes | In French | → Vehicle engineering |
| VPK | Volts Peak | In English | → Electrical engineering |
| VPLCC | Vehicle Propellant Loading Control Center | In English | → Spaceflight engineering, astronautics |
| VPM | Vehicle Project Manager | In English | → Vehicle engineering |
| VPMC | Ventromediale Prefrontale Cortex | In English | → Biological sciences → Anatomy |
| VPP | Virtual Power Plant | In English | → Energy economics → Electrical engineering |
| VPPAW | Variable-Polarity Plasma Arc Welding | In English | → Metallurgy |
| VPRS | Voice Portal Reference System | In English | → Computer-based techniques → Telecommunications |
| VPSA | Vehicle Processing Storage Area | In English | → Vehicle engineering |
| VR | Voltage Regulator | In English | → Electrical engineering |
| VR | Voltage Relay | In English | → Electrical engineering |
| VRM | Venus Radar Mapper | In English | → Astronomy → Spaceflight engineering, astronautics |
| VRS | Virus Respiratoire Syncytial = RSV | Respiratory Syncytial Virus | In English |
In French | → Virology → Pathology |
| VRSB | Virus Respiratoire Syncytial Bovin | In French | → Virology → Veterinary medicine |
| VRSH | Virus Respiratoire Syncytial Humain | In French | → Virology → Infectious diseases |
| VRT | Vlaamse Radio- en Televisieomroep (www.vrt.be) | In Dutch | → Telecommunications |
| VRU | Voice Response Unit | In English | → Telecommunications |
| VSA | Variable-Stability Aircraft | In English | → Aeronautics, aircraft |
| VSAO | Verband der Schweizer Assistenz- und Oberärzte/-ärztinnen = ASMAC | Association Suisse des Médecins-Assistant(e)s et Chef(fe)s de clinique | In French |
In German | → Associations → Medicine |
| VSC | Vehicle Support Contractor | In English | → Vehicle engineering |
| VSCR | Vienna School of Clinical Research | In English | → Education → Medicine |
| VSF | Vétérinaires Sans Frontières = VSF | Veterinarios Sin Fronteras | In Spanish = VSF | Veterinari Senza Frontiere | In Italian |
In French | → Organizations and associations → Veterinary medicine |
| VSF | Veterinarios Sin Fronteras = (look above) |
In Spanish | → Organizations and associations → Veterinary medicine |
| VSF | Veterinari Senza Frontiere = (look above) |
In Italian | → Organizations and associations → Veterinary medicine |
| VSG | Verein Slowakischer Gießereifachleute | In German | → Organizations and associations → Metallurgy |
| VSG | Verband Schweizerischer Gerbereien | In German | → Organizations and associations → Leather industry |
| VSG | Vorschriften für Sicherheit und Gesundheitsschutz | In German | → Public administration, government → Medicine |
| VSI | Vertical Speed Indicator | In English | → Vehicle engineering |
| VSMB | Verband Schweizerischer Modellbaubetriebe | In German | |
| VSMC | Vascular Smooth Muscle Cell | In English | → Blood and circulatory system → 5763 |
| VSO | Very Stable Oscillator | In English | → Electrical engineering |
| VSOE | Vienna Spots of Excellence | In English | → Research policy → Engineering, technology |
| VSTAG | Vandenberg Shuttle Turnaround Analysis Group | In English | → Spaceflight engineering, astronautics |
| VSTAR | Vandenberg Shuttle Turnaround Assessment Report | In English | → Spaceflight engineering, astronautics |
| VSW | Verband Schweizerischer Werbegesellschaften = ASPP | Association des Sociétés Suisses de Publicité | In French = ASSP | Associazione delle Società Svizzere di Pubblicità | In Italian |
In German | → Associations → 6591 |
| VTC | Vlaamse Thermie Coordinate | In Dutch | → Organizations and associations → Energy economics |
| VTC | Véhicule de Transport en Commun | In French | → Transport and postal services |
| VTEC | Verotoxin-Producing Escherichia Coli | In English | → Biological sciences → Pathology |
| VTF | Vertical Test Flight | In English | → Spaceflight engineering, astronautics |
| VTHR | Vidéo Transmission Haute Résolution | In French | → Telecommunications |
| VTI | (Statens) Väg-och Transportforskninginstitut | In Swedish | → Transport and postal services |
| VTML | Vytápění Mariánské Lázně | In Czech | → Engineering, technology |
| VTP | Vehicle Test Plan | In English | → Vehicle engineering |
| VTPS | Vibroacoustic Test Plan Summary | In English | → Acoustical engineering |
| VTS | Vandenberg Tracking Station | In English | → Spaceflight engineering, astronautics |
| VTS | Vibroacoustic Test Summary | In English | → Acoustical engineering |
| VTU | (Ministeriet for) Videnskab, Teknologi og Udvikling | In Danish | → Central administration → Engineering, technology |
| VTVM | Vacuum Tube Voltmeter | In English | → Electrical engineering |
| VU | Vehicle Unit | In English | → Vehicle engineering |
| VU | Vehicle Utility | In English | → Vehicle engineering |
| VUS | Véhicule Utilitaire Sport = SUV | Sport Utility Vehicle | In English |
In French | → Automobile manufacturing → Sport, physical exercises |
| VUSW | Vehicle Utility Software | In English | → Software → Vehicle engineering |
| VUW | Veterinärmedizinische Universität Wien | In German | → Higher education, universities → Zoology → Veterinary medicine |
| VV | Vertical Velocity | In English | → Vehicle engineering |
| VVB | Venovenous Bypass | In English | → Cardiology → Surgery, orthopaedics, ophthalmology |
| VVER | Vodo-vodní energetický reaktor = WWER | Wodo-Wodianoj Eniergieticzeskij Rieaktor | In Polish = WWER | Wasser-Wasser-Energie-Reaktor | In German = ВВЕР | Водо-Водяной Энергетический Реак | In Russian |
In Czech | → Nuclear technology |
| VVI | Vertical Velocity Indicator | In English | → Vehicle engineering |
| W | Watt | In many languages | → Physics → Electrical engineering |
| W&C | Wire and Cable | In English | → Electronics → Telecommunications |
| WAB | World Association for Buiatrics (www.buiatrics.com) |
In English | → Associations → Agricultural sciences |
| WAC | World Aeronautical Chart | In English | → Aeronautics, aircraft |
| WAI | Web Accessibility Initiative | In English | → Internet → Telecommunications |
| WAIMH | World Association of Infant Mental Health | In English | → Associations → Pediatry → Neurology |
| WANO | World Association of Nuclear Operators | In English | → Associations → Nuclear technology |
| WAP | Wireless Access Protocol | In English | → Networks, communication → Telecommunications |
| WARDA | West Africa Rice Development Association | In English | → Associations → Agricultural sciences |
| WARDS | Working for Animals used in Research, Drugs and Surgery | In English | → Medicine → Veterinary medicine |
| WAS | World Aquaculture Society | In English | → Organizations and associations → Fishing, hunting |
| WATS | Wide Area Telephone Service | In English | → Telecommunications |
| WAVE | World Association of Veterinary Educators | In English | → Associations → Education → Veterinary medicine |
| WBC | World Buiatrics Congress | In English | → Congresses → Agricultural sciences |
| WBC | White Blood Cells | In English | → Blood and circulatory system |
| WBCT | Whole Blood Clotting Time | In English | → Blood and circulatory system |
| WBD | Wide-Band Data | In English | → Data → Telecommunications |
| WBF | Wissenschaftlicher Beirat Funk | In German | → Telecommunications |
| WBFDM | Wide-Band Frequency Division Multiplexer | In English | → Telecommunications |
| WBMS | World Bureau of Metal Statistics | In English | → Organizations and associations → Metallurgy |
| WBR | Wide-Band Radiometer | In English | → Telecommunications |
| WBSC | Wide-Band Signal Conditioner | In English | → Telecommunications |
| WBT | Wide-Band Terminal | In English | → Telecommunications |
| WBTS | Wide-Band Transmission System | In English | → Telecommunications |
| WCCU | Wireless Crew Communication Unit | In English | → Telecommunications |
| WCDMA | Wideband Code Division Multiple Access | In English | → Networks, communication → Telecommunications |
| WCMC-Q | Weill Cornell Medical College in Qatar | In English | → Higher education, universities → Medicine |
| WCMH | World Congress on Men's Health & Gender | In English | → Congresses → Sexual problems → Urology |
| WCP | Weapon Control Platform | In English | → Military engineering |
| WCS | Waste Collection System | In English | → Environmental technology, water supply, waste management |
| WCS | Waste Collector System | In English | → Environmental technology, water supply, waste management |
| WCSAR | Wisconsin Center for Space Automation and Robotics | In English | → Mechanical engineering → Electronics → Spaceflight engineering, astronautics |
| WCVSA | Western Canadian Veterinary Students' Association | In English | → Associations → Higher education, universities → Veterinary medicine |
| WDM | Wavelength Division Multiplexing | In English | → Networks, communication → Telecommunications |
| WDM | Wave Division Multiplexing | In English | → Telecommunications |
| WDR | Westdeutscher Rundfunk | In German | → Telecommunications |
| WDVS | Wärmedämmverbundsystem | In German | → Thermodynamics → Building |
| WEAG | Western European Armaments Group | In English | → Organizations and associations → Military engineering |
| WEAO | Western European Armaments Organisation = GAEO | Groupe Armement de l'Europe Occidentale | In French |
In English | → Organizations and associations → Military engineering |
| WEC | World Energy Council = CME | Conseil Mondial de l'Énergie | In French = CME | Consiliul Mondial al Energiei | In Romanian |
In English | → Organizations and associations → International relations → Energy economics |
| WEEE | Waste Electrical and Electronic Equipment = DEEE | Déchets des équipements électriques et électroniques | In French |
In English | → Electrical engineering → Electronics → Environmental technology, water supply, waste management |
| WEMAL | Wexford Energy Management Agency | In English | → Energy economics |
| WER | Weekly Epidemiological Report | In English | → Serial publications, periodicals → Infectious diseases |
| WFC | World Foundry Congress | In English | → Congresses → Metallurgy |
| WFD | Water Framework Directive | In English | → 626 → Environmental technology, water supply, waste management |
| WFF | Wallops Flight Facility | In English | → Aeronautics, aircraft |
| WFH | World Federation of Hemophilia (www.wfh.org) | In English | → Organizations and associations → Blood and circulatory system → Pathology |
| WFNA | White Fuming Nitric Acid | In English | → Chemical technology |
| WFP | 国際連合世界食糧計画 = PMA | Programa Mundial d'Alimentos | In Asturian = PAM | Programme Alimentaire Mondial | In French = WFP | World Food Programme | In English = WFP | 세계 식량 계획 | In Korean = WFP | მსოფლიო სასურსათო საბჭო | In Georgian = PAM | Programma Alimentare Mondiale | In Italian = PMA | Programa Mundial de Alimentos | In Spanish |
In Japanese | → United Nations → 6123 → Agricultural sciences |
| WFP | მსოფლიო სასურსათო საბჭო = PMA, PAM (look above) |
In Georgian | → United Nations → 6123 → Agricultural sciences |
| WFP | 세계 식량 계획 = PMA, PAM (look above) |
In Korean | → United Nations → 6123 → Agricultural sciences |
| WFP | World Food Programme = PMA, PAM (look above) |
In English | → United Nations → 6123 → Agricultural sciences |
| WFS | Wavefield Synthesis | In English | → Acoustical engineering |
| WFSBP | World Federation of Societies of Biological Psychiatry | In English | → Organizations and associations → Psychiatry |
| WGO | Wêreldgesondheidsorganisasie = MOS | Monda Organiz(aĵ)o pri Sano | In Esperanto = WHO | World Health Organization | In English = OMS | Organisation Mondiale de la Santé | In Esperanto = OMS | Organizzazione Mondiale della Sanità | In Italian = OMS | Organización Mundial de la Salú | In Asturian = СЗО | Световната здравна огранизация | In Bulgarian = SZO | Světová zdravotnická organizace | In Czech = OMS | Organització Mundial de la Salut | In Catalan = OMS | Organización Mundial de la Salud | In Spanish = MTO | Maailma Terviseorganisatsioon | In Estonian = MOE | Munduko Osasun Erakundea | In Basque = OMS | Organisacion mondiâla de la sandât | In Franco-Provençal = OMS | Organización Mundial da Saúde | In Galician = SZO | Svjetska zdravstvena organizacija | In Croatian = RTD | Rêxistina Tendurustiyê ya Dinyayê | In Kurdish = UMS | Urganizazziun mundiala da la Santaa | In Lombard = PSO | Pasaulio sveikatos organizacija | In Lithuanian = PVO | Pasaules veselības organizācija | In Latvian |
In Afrikaans | → United Nations → Medicine |
| WGSU | Water-Glycol Service Unit | In English | → Chemical technology |
| WHATWG | Web Hypertext Application Technology Working Group | In English | → Internet → Telecommunications |
| WHIST | Walloon Highway Information System for Traffic | In French | → Transport and postal services |
| WHO | World Health Organization = WGO, MOS, OMS, СЗО, SZO, MTO, MOE, RTD, UMS, PSO, PVO (look above) |
In English | → United Nations → Medicine |
| WiBiCo | Wiener Bilanzbuchhalter/Controller Klub | In German | → Organizations and associations → Accounting |
| WIBR | Wolfson Institute for Biomedical Research | In English | → Research institutes → Biological sciences → Medicine |
| WiEn | Wind Energy | In English | → Serial publications, periodicals → Energy economics → 621548 |
| WiEng | Wind Engineering | In English | → Serial publications, periodicals → Energy economics → 621548 |
| WiMax | Worldwide Interoperability for Microwave Access | In English | → Telecommunications |
| WING | Werkstoffinnovationen für Industrie und Gesellschaft | In German | → Materials science |
| WIS | Water Information System | In English | → Hydrology → Environmental technology, water supply, waste management |
| WISE | World Information Service on Energy | In English | → Energy economics |
| WLS | Western Launch Site | In English | → Spaceflight engineering, astronautics |
| WM | Waste Management | In English | → Environmental technology, water supply, waste management |
| WMA | World Medical Association (www.wma.net) | In English | → Associations → Medicine |
| WMAN | Wireless Metropolitan Area Network | In English | → Networks, communication → Telecommunications |
| WMC | Waste Management Compartment | In English | → Environmental technology, water supply, waste management |
| WMS | Waste Management System | In English | → Environmental technology, water supply, waste management |
| WMV | Watermelon Mosaic Virus | In English | → Virology → Agricultural sciences |
| WNV | West Nile Virus | In English | → Virology → Pathology |
| WOM | Write-Only-Memory | In English | → Memories → Electronics |
| WP | Weapons Platform | In English | → Military engineering |
| WPA | World Psychiatric Association | In English | → Associations → Psychiatry |
| WPAN | Wireless Personal-Area Network | In English | → Networks, communication → Telecommunications |
| WPANL | Wright-Patterson Aeronautical Laboratory | In English | → 358 → Aeronautics, aircraft |
| WPVMS | West Point Veterinary Medical Society | In English | → Organizations and associations → Veterinary medicine |
| WRAP | Waste & Ressources Action Programme | In English | → Environmental technology, water supply, waste management |
| WRAP | Waste and Resources Action Programme | In English | → Environmental technology, water supply, waste management |
| WRD | Water Resource Database | In English | → Libraries → Hydrology → 627 → Environmental technology, water supply, waste management |
| WREAN | Western Regional Energy Agency & Network | In English | → Energy economics |
|