| Acronym | Sense | Language | Topics |
|---|---|---|---|
| UFO | Uidentificeret flyvende objekt = OVNI | Objet Volant Non Identifié | In French = OVNI | Objecte Volador No Identificat | In Catalan = НЛО | Неидентифициран летящ обект | In Bulgarian = OVNI | Objeto Volador No Identificado | In Spanish = UFO | Unidentifiziertes Flugobjekt | In German = UFO | Unidentified Flying Object | In English = UFO | Unknown Flying Object | In English = NIFO | Neidentigita Fluganta Objekto | In Esperanto = UFO | Unbekend fleanend objekt | In Frisian = עב"מ | עצם בלתי מזוהה | In Hebrew = OVNI | Oggetto Volante Non Identificato | In Italian = NLO | Neidentificēts lidojošs objekts | In Latvian = UFO | Uidentifisert flygende objekt | In Norwegian = UFO | Uidentifisert flygande objekt | In Nynorsk = NOL | Niezidentyfikowany Obiekt Latający | In Polish = OVNI | Objeto Voador Não Identificado | In Portuguese = OZN | Obiect Zburător Neidentificat | In Romanian = НЛО | Неопознанный летающий объект | In Russian = NLO | Neidentifikovani leteći objekat | In Serbo-Croatian |
In Danish | → Astronautics |
| UFO | Unbekend fleanend objekt = OVNI, НЛО, NIFO, עב"מ, NLO, NOL, OZN (look above) |
In Frisian | → Astronautics |
| UFO | Uidentifisert flygende objekt = OVNI, НЛО, NIFO, עב"מ, NLO, NOL, OZN (look above) |
In Norwegian | → Astronautics |
| UFO | Uidentifisert flygande objekt = OVNI, НЛО, NIFO, עב"מ, NLO, NOL, OZN (look above) |
In Nynorsk | → Astronautics |
| ULO | Unmanned Launch Operations | In English | → Astronautics |
| ULV | Unmanned Launch Vehicle | In English | → Astronautics |
| UMO | Unmanned Orbital | In English | → Astronautics |
| UMPS | Unité de Médecine et Physiologie Spatiales | In French | → Medicine → Physiology → Astronautics |
| UMVF | Unmanned Vertical Flight | In English | → Aeronautics, aircraft → Astronautics |
| UNOOSA | United Nations Office for Outer Space Affairs | In English | → United Nations → Astronomy → Astronautics |
| UNPSA | United Nations Programme on Space Applications | In English | → United Nations → Astronomy → Astronautics |
| UNSC | United Nations Space Command | In English | → Military affairs → United Nations → Astronautics |
| UoSAT | University of Surrey Satellite | In English | → Higher education, universities → Astronautics |
| UPS | Upright Perigee Stage | In English | → Astronautics |
| USA | United Space Alliance (www.unitedspacealliance.com) | In English | → Astronautics |
| USAM | Ufficio Generale Spazio Aereo e Meteorologia | In Italian | → Meteorology, climatology → Aeronautics, aircraft |
| USASATCOMA | United States Army Satellite and Communication Agency | In English | → Military affairs → Astronautics → Telecommunications → United States |
| USASDG | United States Army Space Defense Group | In English | → Military affairs → Military engineering → Astronautics → United States |
| USBI | United Space Booster, Incorporated | In English | → Astronautics |
| USNS | United States Navy Ship | In English | → 359 → 6295 → United States |
| USRA | Universities Space Research Association (https://www.usra.edu) | In English | → Associations → Higher education, universities → Astronomy → Astronautics → United States |
| USS | United States Ship | In English | → 6295 → United States |
| USS | Unmanned Space Satellite | In English | → Astronautics |
| UTAC | Union Technique de l'Automobile et du Cycle | In French | → Organizations and associations → Automobile manufacturing |
| UTS | Unmanned Teleoperator Spacecraft | In English | → Astronautics |
| UVF | Unmanned Vertical Flight | In English | → Aeronautics, aircraft → Astronautics |
| VAA | Vehicle Assembly Area | In English | |
| VAB | Vehicle Assembly Building | In English | |
| VAB | Véhicule de l'Avant Blindé | In French | → Automobile manufacturing → Military engineering |
| VAC | Vehicle Assembly and Checkout | In English | |
| VAC | Visual Approach Chart | In English | → Geodesy, cartography → Transport and postal services → Aeronautics, aircraft |
| VACH | Véhicule d'Appui Chimique | In French | → Automobile manufacturing → Firefighting → Chemical technology |
| VACLED | Véhicule d'Appui du Camion de Levage et de Déblaiement | In French | → Automobile manufacturing → Firefighting |
| VAG | Véhicule d'accompagnement GREP | In French | |
| VAL | Véhicule Automatique Léger | In French | → Transport and postal services |
| VAPEPS | Vibroacoustic Payload Environment Prediction System | In English | → Acoustics → Astronautics |
| VASI | Visual Approach Slope Indicator | In English | → Aeronautics, aircraft → Transport by air |
| VBS | Véhicule de Balisage et de Signalisation | In French | |
| VC | Véhicule Cynotechnique | In French | |
| VCC | Vehicle Command Count | In English | |
| VCC | Vehicle Crew Chief | In English | |
| VCL | Vehicle Centerline | In English | |
| VCM | Véhicule à Carburant Modulable | In French | |
| VCN | Vehicle Configuration Number | In English | |
| VCÖ | Verkehrsclub Österreich (www.vcoe.at) | In German | → Organizations and associations → Transport and postal services → Austria |
| VCP | Vehicle Control Processor | In English | → Computer hardware |
| VCS | Vehicle Cargo System | In English | |
| VDC | Vehicle Dynamic Control | In English | → Electronics → Automobile manufacturing |
| VDS | Vehicle Dynamic Simulator | In English | |
| VDSS | Vehicle Dynamic Simulator System | In English | |
| VDT | Vehicle Data Table | In English | |
| VE | Equivalent Velocity | In English | |
| VE | Vehicle Engineering | In English | |
| VEB | Vehicle Equipment Bay | In English | |
| VEDS | Vehicle Emergency Detection System | In English | |
| VEEI | Vehicle Electrical Engine Interface | In English | → Electrical engineering |
| VEHLIB | Vehicle Hybrid Library | In English | |
| VEI | Vehicle End Item | In English | |
| VEM | Véhicule à Éléments Modulaires | In French | |
| VEMA | Véhicule à Élements Modulaires Amovibles | In French | |
| VEPAR | Véhicule d'Entraînement au Port de l'Appareil Respiratoire | In French | → Automobile manufacturing → Specialized or polytechnical colleges → Firefighting |
| VES | Véhicule d'Extinction et de Sauvetage | In French | → Automobile manufacturing → Firefighting |
| VF | Vertical Flight | In English | → Aeronautics, aircraft |
| VFC | Véhicule Feux de Cheminée | In French | → Automobile manufacturing → Firefighting |
| VFI | Verification Flight Instrumentation | In English | → Aeronautics, aircraft → Astronautics |
| VFR | Visual Flight Rule | In English | → Aeronautics, aircraft → Astronautics |
| VFS | Véhicule Feux Spéciaux | In French | → Automobile manufacturing → Firefighting |
| VFT | Verification Flight Test | In English | → Aeronautics, aircraft → Astronautics |
| VFT | Vertical Flight Test | In English | → Aeronautics, aircraft → Astronautics |
| VG | Velocity Generator | In English | |
| VGIMU | Velocity to be Gained as related to IMU orientation | In English | |
| VGOR | Vehicle Ground Operation Requirement | In English | |
| VGP | Vehicle Ground Point | In English | |
| VGRF | Variable-Gravity Research Facility | In English | → Research institutes → Astronomy → Astronautics |
| VGT | Vehicle Ground Test | In English | |
| VHAA | Very High Altitude Abort | In English | → Astronautics |
| VHD | Véhicule Hybride Diesel/Électrique | In French | → Electrical engineering |
| VHM | Vehicle Health Monitoring | In English | |
| VHU | Véhicule Hors d'Usage | In French | → Transport and postal services |
| VI | Véhicule Industriel | In French | |
| VIB | Vehicle Integration Building | In English | |
| VIC | Véhicule d'Intervention Chimique | In French | → Automobile manufacturing → Firefighting |
| VID | Véhicule d'Intervention Diverse | In French | → Automobile manufacturing → Firefighting |
| VIL | Vehicle Integration and Launch | In English | |
| VIP | Véhicule d'Interventions Polyvalent | In French | → Automobile manufacturing → Firefighting |
| VISTAR | Visible Space Tracking and Reconnaissance | In English | → Astronomy → Astronautics |
| VIT | Vehicle Integration Test | In English | |
| VIU | Vehicle Interface Unit | In English | → Human-computer interaction |
| VIVACE | Value Improvement through a Virtual Aeronautical Collaborative Enterprise | In English | → Aeronautics, aircraft |
| VL | Véhicule Lourd | In French | → Transport and postal services |
| VLF | Vertical Launch Facility | In English | → Aeronautics, aircraft → Astronautics |
| VLI | Véhicule Léger Infirmier | In French | → Medicine |
| VLM | Véhicule Léger Médicalisé | In French | → Medicine |
| VLPS | Vandenberg Launch Processing System | In English | → Astronautics |
| VLR | Véhicule de Liaison Radio | In French | → Telecommunications |
| VLS | Vandenberg Launch and Landing Site | In English | → Astronautics |
| VLS | Vandenberg Launch Site | In English | → Astronautics |
| VLS | Vertical Launch System | In English | → Aeronautics, aircraft → Astronautics |
| VLSST | Vandenberg Launch Site Support Team | In English | → Astronautics |
| VMF | Véhicule Multi-Fonctions | In French | |
| VMS | Vehicle Management System | In English | |
| VMS | Velocity Measuring System | In English | |
| VO | Space Vehicle Operations | In English | → Astronautics |
| VO | Vehicle Operations | In English | |
| VOA | Véhicule d'Observation de l'Artillerie | In French | → Automobile manufacturing → Military engineering |
| VOCP | Vehicle-Out-of-Commission Part | In English | |
| VOEMEC | Verband Österreichischer Modell-Eisenbahn-Clubs (www.voemec.at) | In German | → Organizations and associations → Entertainment → Rail transport engineering → Austria |
| VOIR | Venus Orbiting Imaging Radar | In English | → Astronomy → Astronautics |
| VPE | Véhicules Propres et Économes | In French | |
| VPHD | Vertical Payload Handling Device | In English | → Astronautics |
| VPI | Véhicule de Première Intervention | In French | → Automobile manufacturing → Firefighting |
| VPIL | Véhicule de Première Intervention Léger | In French | → Automobile manufacturing → Firefighting |
| VPLCC | Vehicle Propellant Loading Control Center | In English | → Astronautics |
| VPM | Vehicle Project Manager | In English | |
| VPSA | Vehicle Processing Storage Area | In English | |
| VRM | Venus Radar Mapper | In English | → Astronomy → Astronautics |
| VRM | Véhicule Radio Médicalisé | In French | → Telecommunications → Medicine |
| VSA | Variable-Stability Aircraft | In English | → Aeronautics, aircraft |
| VSAB | Véhicule de Secours aux Asphyxiés et Blessés | In French | → Automobile manufacturing → Firefighting → Traumatology → 6122 |
| VSABTT | Véhicule de Secours aux Asphyxiés et Blessés Tout Terrain | In French | → Automobile manufacturing → Firefighting → Traumatology → 6122 |
| VSAV | Véhicule de Secours et d'Assistance aux Victimes | In French | → Automobile manufacturing → Firefighting → Traumatology |
| VSC | Vehicle Support Contractor | In English | |
| VSI | Vertical Speed Indicator | In English | |
| VSM | Véhicule de Secours Médical | In French | → Medicine |
| VSTAG | Vandenberg Shuttle Turnaround Analysis Group | In English | → Astronautics |
| VSTAR | Vandenberg Shuttle Turnaround Assessment Report | In English | → Astronautics |
| VTF | Vertical Test Flight | In English | → Astronautics |
| VTM | Véhicule de Transport de Matériel | In French | → Transport and postal services |
| VTP | Vehicle Test Plan | In English | |
| VTP | Véhicule de Transport de Personnel | In French | → Transport and postal services |
| VTS | Vandenberg Tracking Station | In English | → Astronautics |
| VTT | Véhicule Tout Terrain | In French | |
| VTU | Véhicule Tout Usage | In French | |
| VTUTP | Véhicule Tout Usage et Transport de Personnel | In French | → Transport and postal services |
| VU | Vehicle Unit | In English | |
| VU | Vehicle Utility | In English | |
| VUS | Véhicule Utilitaire Sport = SUV | Sport Utility Vehicle | In English |
In French | → Automobile manufacturing → Sport, physical exercises |
| VUSW | Vehicle Utility Software | In English | → Software |
| VV | Vertical Velocity | In English | |
| VVI | Vertical Velocity Indicator | In English | |
| WAC | World Aeronautical Chart | In English | → Aeronautics, aircraft |
| WASP | Watkins Aircraft Support Products (www.waspinc.com) | In English | → Aeronautics, aircraft |
| WCSAR | Wisconsin Center for Space Automation and Robotics (http://wcsar.engr.wisc.edu) | In English | → Research institutes → Mechanical engineering → Electronics → Astronautics → United States |
| WFF | Wallops Flight Facility | In English | → Aeronautics, aircraft |
| WIRE | Wide-field Infrared Explorer | In English | → Astronautics → Astronomy |
| WISE | Wide-field Infrared Survey Explorer | In English | → Astronautics → Astronomy |
| WLS | Western Launch Site | In English | → Astronautics |
| WPANL | Wright-Patterson Aeronautical Laboratory | In English | → 358 → Aeronautics, aircraft |
| WSMC | Western Space and Missile Center | In English | → Military engineering → Astronautics |
| WSMCR | Western Space and Missile Center Range | In English | → Military engineering → Astronautics |
| WSMCR | Western Space and Missile Center Regulation | In English | → Military engineering → Astronautics |
| WSOA | Winged Sprints on Asphalt (http://wsoa.us) | In English | → Sport, physical exercises → Automobile manufacturing → United States |
| WSV | Weapon System Vehicle | In English | → Military engineering |
| WUPPE | Wisconsin Ultraviolet Photo-Polarimeter Experiment | In English | → Astronautics → United States |
| WUSCI | Western Union Space Communications, Incorporated | In English | → Telecommunications → Astronautics |
| XEUS | X-Ray Evolving Universe Spectroscopy Mission | In English | → Astronautics → Astronomy |
| ZEVGA | Zeitschrift fur Eisenbahnwesen und Verkehrstechnik Glasers Annalen | In German | → Serial publications, periodicals → Transport and postal services |
| ZFlu | Zeitschrift fur Flugwissenschaften | In German | → Serial publications, periodicals → Astronautics |
| ZFlWe | Zeitschrift fur Flugwissenschaften und Weltraumforschung | In German | → Serial publications, periodicals → Astronautics |
| ZGT | Zero-Gravity Trainer | In English | → Astronautics |
| ИКИ | Института космических исследований (http://arc.iki.rssi.ru) | In Russian | → Research institutes → Astronomy → Astronautics → Russia |
| МИАТ | Монголын Иргэний Агаарын Тээвэр = MIAT | Mongolyn Irgenii Agaaryn Teever | In Mongolian |
In Mongolian | → Aeronautics, aircraft → Transport and postal services |
| НЛО | Неидентифициран летящ обект = UFO, OVNI, NIFO, עב"מ, NLO, NOL, OZN (look above) |
In Bulgarian | → Astronautics |
| НЛО | Неопознанный летающий объект = UFO, OVNI, NIFO, עב"מ, NLO, NOL, OZN (look above) |
In Russian | → Astronautics |
| עב"מ | עצם בלתי מזוהה = UFO, OVNI, НЛО, NIFO, עב"מ, NLO, NOL, OZN (look above) |
In Hebrew | → Astronautics |