O
- Code
-
Meaning
Language
Themes and places
- ORDA
-
Oficiul Român pentru Drepturile de Autor
- ORDBMS
-
Object-Relational Database Management System
- ORDI
-
Ontology Representation and Data Integration
- ORE
-
Observatoire de Recherche en Environnement
- ORE
-
Output Request Element
- ORE
-
Opérateur de Réseau Électricité
- OREF
-
Observatoire Régional de l'Emploi et de la Formation
- OREM
-
Officier de Renseignement d'État-Major
- ORF
-
Observer Research Foundation
- ORF
-
Österreichischer Rundfunk (http://orf.at)
- ORFEUS
-
Observatories and Research Facilities for EUropean Seismology (http://orfeus.knmi.nl)
- ORG
-
Opérateur de Réseau Gaz
- ORGM
-
Office National de Recherche Géologique et Minière
- ORGT
-
Officier Renseignement de Groupement Tactique
- ORGUE
-
Outils de Réorganisation de la Gestion Unifiée des Entités
- ORGÉV
-
Omnium de Recherche sur la Génétique du Vieillissement
- ORI
-
Operational Readiness Inspection
- ORI
-
Ocean Research Institute (www.ori.u-tokyo.ac.jp)
- ORIC
-
ORganisation Informatique Comptable
- ORIENT
-
Oriental Research Infrastructure to European Networks
- ORIS
-
Office of Research and Information Systems
- ORLA
-
Optimum Repair Level Analysis
- ORM
-
Operational Reactivity Margin
- ORM
-
Opérateur de Réseau Mixte
- ORM
-
Observatoire Régional des Métiers
- ORMP
-
Office Rwandais des Marchés Publics
- ORP
-
OFS Retransmission Processor
- ORP
-
Optional Retirement Program
- ORPCF
-
Organisation pour la Reconstruction du Parti Communiste de France
- ORPHEM
-
Organisation Régionale des Pharmaciens Hospitaliers de l’Est Méditerranéen
- ORR
-
Operational Readiness Review
The abbreviation ORR (Operational Readiness Review) includes the abbreviation RR (Readiness Review).
- ORR
-
Operations Requirements Review
The abbreviation ORR (Operations Requirements Review) is included in the abbreviation PORR (Preliminary Operations Requirements Review), and it includes the abbreviation RR (Requirements Review).
- ORR
-
Ordre de Réduction de Recettes
- ORRCA
-
Ontario Research Centre for Computer Algebra (www.orcca.on.ca)
- ORROE
-
Occasional Reports of the Royal Observatory Edinburgh
- ORS
-
Outer Root Sheath
- ORS
-
Österreichische Rundfunksender (www.ors.at)
- ORS
-
Orbital Refueling System
- ORS
-
Orbital Reservicing System
- ORS
-
Orbital Resupply System
- ORSDI
-
Oak Ridge Selective Dissemination of Information
- ORSE
-
Observatoire sur la Responsabilité Sociétale des Entreprises
- ORSEC
-
Organisation de la Réponse de SEcurité Civile
- ORT
-
Operational Readiness Test
- ORT
-
Orbit Readiness Test
- ORT
-
Organisation Reconstruction Travail
- ORT
-
Opération de Revitalisation du Territoire
- ORTA
-
Organisme de Ràdio i Televisió d'Andorra
- ORTAS
-
Organisme de la Radio-Télévision Arabe Syrienne
- ORTÜ
-
Orta Doğu Teknik Üniversitesi
- ORU
-
Orbital Replaceable Unit
- ORU
-
Orbital Replacement Unit
- ORU
-
Opération de Rénovation Urbaine
- ORV
-
Orbital Research Vehicle
- OS
-
Orientalia Suecana
- OS
-
On-orbit Station
- OS
-
Operating Software
- OS
-
Operating System
The abbreviation OS (Operating System) is included in abbreviations such as FMA (Finanzmarktaufsicht), BOS (Backup Operating System), COS (Console Operating System), EOS (Extended Operating System), FCOS (Flight Computer Operating System), FCOS (Flight Control Operating System), MS-DOS (Microsoft Disk Operating System), GCOS (Ground Computer Operating System), HOS (Hybrid Operating System), IDOS (Integrated Display Operating System), MSDOS (Mass Storage Digital Operating System), OSID (Operating System Interface Definition), POSIX (Portable Operating System Interface), DOS (Disk Operating System), RDOS (Real-Time Disk Operating System), SCOS (Subsystem Computer Operating System), TOS (Test Operating System), ECOS (Experiment Computer Operating System), QDOS (Quick and Dirty Operating System), MOS (Machine Operating System), PC-DOS (Personal Computer Disk Operating System), TOS (Tape Operating System), RTOS (Real-Time Operating System), CNOS (Communication Network Operating System), BDOS (Basic Disk Operating System), ROSS/V (RSTS/E Operating System Simulator for VAX), WOS (Web Operating System), BOS (Base Operating System), DTOS (Distributed Trusted Operating System), DROPS (Dresden Real-Time Operating System Project), COS (Cray Operating System) and FOS (Factored Operating System).
- OS
-
Orbiter CEI Specification
- OS
-
Operazione Sviluppo
- OS
-
Open Source
The abbreviation OS (Open Source) is included in abbreviations such as OSI (Open Source Initiative), OSDL (Open Source Development Labs), OSDL (Open Source Development Lab), FLOSS (Free/Libre Open Source Software), OSIM (Open Source In Morocco), GOSCON (Government Open Source Conference), OSSTMM (Open Source Security Testing Methodology Manual), OSEM (Open Source Event Manager) and OSS (Open Source Software).
- OS3B
-
Open Software Blanc Bleu Belge
- OSA
-
Oklahoma Sociological Association
- OSA
-
Operational Support Area
The abbreviation OSA (Operational Support Area) includes the abbreviation SA (Support Area).
- OSA
-
Ordered-Subset Analysis
- OSA
-
Ordo Sancti Augustini
- OSA
-
Operatori Spettacolo Associati
- OSA
-
Operational Support Airlift
- OSA
-
Officier Supérieur Adjoint
- OSAJ
-
Optical Society of America Journal
- OSAJI
-
Optical Society of America Journal - Optics and Image Science
- OSALL
-
Organisation of South African Law Libraries
- OSART
-
Operational Safety Assessment Review Team
- OSB
-
Oberste Schifffahrtsbehörde
- OSB
-
Order of Saint Benedict
- OSB
-
Ordo Sancti Benedicti
- OSB
-
Orientated Strand Board
- OSBL
-
Organisme Sans But Lucratif
- OSBL
-
Online Stochastic Batch Learning
- OSC
-
Orbital Sciences Corporation
- OSC
-
Order of Saint Camillus
- OSC
-
Operations Support Center
- OSC
-
Operations Support Contract
- OSC
-
Optical Signatures Code
- OSC
-
Orientations Stratégiques Communautaires
- OSC
-
Ookmeer Schinkelhaven Combinatie
- OSC
-
Olstse Sport Club
- OSC
-
Oosterhoutse Sport Club
- OSC
-
Orthense Sport Club
- OSCAR
-
Orbiting Satellite Carrying Amateur Radio
- OSCAR
-
Outils de Services, Conseils et Assistance Rapide
- OSCAR
-
Open Super-large Crawled ALMAnaCH coRpus
- OSCE
-
Organization for Security and Cooperation in Europe (www.osce.org)
= OSCE | Organisation pour la Sécurité et la Coopération en Europe | In French
- OSCE
-
Organisation pour la Sécurité et la Coopération en Europe (www.osce.org)
= OSCE (see above)
- OSCF
-
Operations Support Computing Facility
- OSCI
-
Organisation des Opérateurs Spécialisés du Commerce International
- OSCIP
-
Organização da Sociedade Civil de Interesse Público
- OSCN
-
Orbiter Specification Change Notice
The abbreviation OSCN (Orbiter Specification Change Notice) includes abbreviations CN (Change Notice) and SCN (Specification Change Notice).
- OSCR
-
Orbiter Software Change Request
The abbreviation OSCR (Orbiter Software Change Request) includes abbreviations CR (Change Request), SC (Software Change) and SCR (Software Change Request).
- OSCRS
-
Orbital Spacecraft Consumables Resupply System
- OSD
-
Office of the Secretary of Defense
- OSD
-
Open Source Definition
- OSDH
-
Orbiter System Definition Handbook
- OSDL
-
Open Source Development Labs
= OSDL | Open Source Development Lab | In English
The abbreviation OSDL (Open Source Development Labs) includes the abbreviation OS (Open Source).
- OSDL
-
Open Source Development Lab
= OSDL (see above)
The abbreviation OSDL (Open Source Development Lab) includes the abbreviation OS (Open Source).
- OSDO
-
Ons Samenspel Doet Overwinnen
- OSDPE
-
Office of the Secretary of Defense Program Element
- OSE
-
Open System Environment
- OSE
-
Oeuvre de Secours aux Enfants
- OSE
-
Operating Support Equipment
- OSE
-
Orbital Support Equipment
- OSEM
-
Open Source Event Manager
The abbreviation OSEM (Open Source Event Manager) includes the abbreviation OS (Open Source).
- OSERA
-
Ohio Scientific Education & Research Association (www.osera.org)
- OSERS
-
Office of Special Education and Rehabilitative Services
- OSF
-
Open Software Foundation
- OSF
-
Orbiter Simulation Facility
- OSG
-
Openbare Scholengemeenschap
- OSGE
-
Observatoire Statistique du Groupe EDF
- OSGi
-
Open Services Gateway initiative (www.osgi.org)
- OSH
-
Oblates of the Sacred Heart
- OSHA
-
Occupational Safety and Health Administration (https://www.osha.gov/)
- OSHA
-
Occupational Safety and Health Act
- OSHA
-
Operating and Support Hazard Analysis
The abbreviation OSHA (Operating and Support Hazard Analysis) includes the abbreviation HA (Hazard Analysis).
- OSI
-
Open Systems Interconnection
- OSI
-
Otto-Suhr-Institut für Politikwissenschaft
- OSI
-
Open Source Initiative (https://opensource.org/)
The abbreviation OSI (Open Source Initiative) includes the abbreviation OS (Open Source).
- OSI
-
Open Society Institute
- OSI
-
Office of Strategic Influence
- OSI
-
Ordnance Survey Ireland
- OSI
-
Österreichisches Ost- und Südosteuropa-Institut (www.osi.ac.at)
- OSI
-
Onze Sport Inspireert
- OSID
-
Operating System Interface Definition
The abbreviation OSID (Operating System Interface Definition) includes the abbreviation OS (Operating System).
- OSID
-
Open Systems and Information Dynamics
- OSIEK
-
Organiza Societo de Internaciaj Esperanto-Konferencoj
- OSIM
-
Oficiul de Stat pentru Invenţii şi Mărci
- OSIM
-
Open Source In Morocco
The abbreviation OSIM (Open Source In Morocco) includes the abbreviation OS (Open Source).
- OSIRIS
-
Outil de Synthèse Informatique des Résultats et Indicateurs Standardisés
- OSIRIS
-
Organisation et Système Informatisé de Rangement des Informations Stratégiques
- OSIRIS
-
Observatoire des Systèmes d’Informations, des Réseaux et des Inforoutes au Sénégal (www.osiris.sn)
- OSITOP
-
Open Systems Interconnection/Technical and Office Protocols
- OSJaJ
-
Oceanographical Society of Japan Journal
- OSM
-
On-Orbit Spares Model
- OSM
-
Operational Status Monitoring
- OSM
-
Orbiter Service Module
The abbreviation OSM (Orbiter Service Module) includes the abbreviation SM (Service Module).
- OSM
-
Obiettivi di Sviluppo del Millennio
= OMD | Objectifs du Millénaire pour le Développement | In French
= MDG | Millennium Development Goals | In German
= TPM | Tujuan Pembangunan Milenium | In Indonesian
= ODM | Objetivos de Desarrollo del Milenio | In Spanish
= MDM | Metas de Desenvolvimento do Milênio | In Portuguese - OSM
-
Omni Sportvereniging Maarssenbroek
- OSMOI
-
Organisation Spéciale de la Main d'Oeuvre Immigrée
- OSMP
-
Operational Support Maintenance Plan
- OSN
-
Organizace Spojených Národů (https://www.un.org/)
= UN | Unuiĝintaj 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
= ՄԱԿ | Միավորված Ազգերի Կազմակերպություն | In Armenian
= FN | Feriene Naasjes | In Frisian
= UN | United Nations | In English
= NBE | Nazio Batuen Erakundea | In Basque
= ONU | Organizacion de las Nacions 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
= HN | Huñusqa Nasyunkuna | In Quechuan languages
= PBB | Pertubuhan Bangsa-bangsa Bersatu | In Malay
= NA | Na Náisiúin Aontaithe | In Irish
= NY | Neteweyên Yekbûyî | In Kurdish
= ÜRO | Ühinenud Rahvaste Organisatsioon | In Estonian
= SÞ | Sameinuðu þjóðanna | In Icelandic
= ЕМрО | Еидгылоу Амилаҭқәа Рорганизациа | In Abkhazian
= ДЛО | Дунэе Лъэпкъ Организацие | In Adyghe
= የተ.መ.ድ. | የተባበሩት መንግሥታት ድርጅት | In Amharic
= ЦМГІ | Цолъарал Миллатазул ГІуцІи | In Avar
= BMT | Birləşmiş Millətlər Təşkilatı | In Azerbaijani
= VN | Vaoantn Nationa | In Austro-Bavarian
= JTO | Jongtėniu Tautū Uorganėzacėjė | SGS
= БМО | Берләшкән Милләттәр Ойошмаһы | In Bashkir
= НҮБ | Нэгэдэһэн Үндэһэтэнэй Байгуулга | BXR
= BM | Birleşken Milletler | In Crimean Tatar
= CU | Cenhedloedd Unedig | In Welsh
= ONU | Organización las Nacionis Unías | In Extremaduran
= އ.ދ | އެކުވެރި ދައުލަތްތައް | In Dhivehi
= ÜRO | Ütistünüisi Rahvidõ Organisatsiuun | VRO
= ÜR | Ütistünüq Rahvaq | VRO
= YK | Yhdistyneet kansakunnat | In Finnish
= ONU | Organizazion des Nazions Unidis | In Friulian
= ONI | Organizasyon di sé Nasyonzini | In French Guianese Creole
= ONU | Organización das Nacións Unidas | In Galician
= AU | Ny h-Ashoonyn Unnaneysit | In Manx
= UN | United Nations | In Fiji Hindi
= UN | Ujedinjeni narodi | In Croatian
= ENSZ | Egyesült Nemzetek Szervezete | In Hungarian
= ՄԱԿ | Միաւորուած Ազգերու Կազմակերպութիւն | In Western Armenian
= ONU | Organisation del Nationes Unite | In Interlingua
= PBB | Perserikatan Bangsa-Bangsa | In Indonesian
= OUN | Organisation del Unit Nationes | In Interlingue
= PBB | Pasarékatan Bangsa-Bangsa | In Javanese
= BMSh | Birlesken Milletler Shólkemi | In Karakalpak
= გაერო | გაერთიანებული ერების ორგანიზაცია | In Georgian
= ЛъЗ | Лъэпкъ Зэгуэтхэр | In Kabardian
= БМО | Бирлешген Миллетлени Организациясы | In Karachay-Balkar
= ӦВК | Ӧтувтчӧм Войтыръяслӧн Котыр | In Komi
= БУУ | Бириккен Улуттар Уюму | In Kirghiz
= СМТ | Садхьанвай миллетрин тешкилат | LEZ
= NU | Nasiones Unida | In Lingua Franca Nova
= VN | Verenigde Naties | In Limburgish
= ÜNU | Urganizaziun di Naziun Ünii | In Lombard
= LIBIMO | Lisangá lya Bikólo bya Mokili mobimba | In Lingala
= LBM | Lisangá lya Bikólo bya Molɔ́ngɔ́ | In Lingala
= JTO | Jungtinių Tautų Organizacija | In Lithuanian
= ANO | Apvienoto Nāciju Organizācija | In Latvian
= PBB | Pasarékatan Bangsa-Bangsa | BMS
= FM | Firenena Mikambana | MLG
= ИНО | Иктыш ушнышо Наций-влак Организаций | MHR
= PBB | Pasarikatan Banso-Banso | MIN
= ООН | Организација на обединетите нации | In Macedonian
= НҮБ | Нэгдсэн Үндэстний Байгууллага | In Mongolian
= संरा | संयुक्त राष्ट्रे | In Marathi
= SN | Dei sameinte nasjonane | In Nynorsk
= FN | De forente nasjoner | In Norwegian
= ߡ.ߟ.ߛ | ߡߊ߲߬ߕߏ߲ ߘߍ߬ߣߍ߲ ߛߌ߲߬ߝߏ߲߬ߧߊ߬ߟߌ | NQO
= ONE | Organisatioun des Natiouns Eunies | In Norman
= ИНО | Иугонд Нациты Организаци | In Ossetian
= HA | Huñusqa Aylluskakuna | In Quechuan languages
= ONU | Organisassion dle Nassion Unìe | In Piedmontese
= ONU | Organisaziun da las Naziuns unidas | In Romansh
= ОЗН | Орґанізація Зъєдиненых Націй | RUE
= ХНТ | Холбоһуктаах Нациялар Тэрилтэлэрэ | In Yakut
= UNO | Unitit Naitions Organisation | In Scots
= UN | Unitit Naitions | In Scots
= ON | Ovttastuvvan Našuvnnat | In Northern Sami
= MNP | Mubatanidzwa weNyika Pasirose | SNA
= QM | Qaramada Midoobay | In Somali
= OKB | Organizata e Kombeve të Bashkuara | In Albanian
= PBB | Perserikatan Bangsa-Bangsa | In Sundanese
= СММ | Созмони Милали Муттаҳид | In Tajik
= BMG | Birleşen Milletler Guramasy | In Turkmen
= БМО | Берләшкән Милләтләр Оешмасы | In Tatar
= ОНО | Огазеяськем Нациослэн Организацизы | UDM
= ONU | Organixasion dełe Nasion Unìe | In Venetian
= ÜRO | Ühtenzoittud Rahvahiden Organizacii | In Veps
= ÜRK | Ühthižrahvazkundad | In Veps
= ÜN | Ühtištetad Nacijad | In Veps
= NNP | Nogan Netas Pebalöl | In Volapük
= ONU | Organizåcion des Nåcions Uneyes | In Walloon
= KMX | Kureelu Mbootayu Xeet yi | In Wolof
= AOA | Àgbájọ àwọn Orílẹ̀-èdè Aṣòkan | In Yoruba - OSN
-
Organizácia Spojených národov (https://www.un.org/)
= UN, ONU, ААН, VN, OOH, ABU, ПНО, ՄԱԿ, FN, NBE, CN, KU, ΟΗΕ, ООН, ONZ, BMT, LHiQ, OKB, OZN, УН, UM, ST, HN, PBB, NA, NY, ÜRO, SÞ, ЕМрО, ДЛО, የተ.መ.ድ., ЦМГІ, JTO, БМО, НҮБ, CU, އ.ދ, YK, ONI, AU, ENSZ, OUN, BMSh, გაერო, ЛъЗ, ӦВК, БУУ, СМТ, ÜNU, LIBIMO, LBM, ANO, FM, ИНО, संरा, ߡ.ߟ.ߛ, ONE, HA, ОЗН, ХНТ, UNO, MNP, QM, СММ, BMG, ОНО, ÜRK, NNP, KMX, AOA (see above)
- OSO
-
Ocean Systems Operation
- OSO
-
Orbiting Solar Observatory
- OSO
-
Omroep Sport Organisatie
- OSOP
-
Orbiter Systems Operating Procedure
The abbreviation OSOP (Orbiter Systems Operating Procedure) includes the abbreviation OP (Operating Procedure).
- OSP
-
Office of Space Planning
- OSPF
-
Open Shortest Path First
- OSPG
-
Österreichisch-Südpazifische Gesellschaft (www.univie.ac.at/ospg/)
- OSQC
-
Outil Standard de la Qualité Comptable
- OSR
-
Oberster Sanitätsrat
- OSR
-
Operations Support Room
- OSR
-
Optical Surface Reflector
- OSR
-
Optika signorekono
- OSR
-
Operation Scholastic Outreach
- OSRBD
-
Operational Software Reliability Benchmark Development
- OSS
-
Office of Space Sciences
- OSS
-
Optics Subsystem
- OSS
-
Orbiting Space Station
The abbreviation OSS (Orbiting Space Station) includes the abbreviation SS (Space Station).
- OSS
-
Oefening Staalt Spieren
- OSS
-
Open Source Software
The abbreviation OSS (Open Source Software) includes the abbreviation OS (Open Source).
- OSSA
-
Office of Space Science and Applications
- OSSA
-
Office of Space Sciences and Applications
- OSSA
-
Oxfordshire School Sports Association
- OSSAD
-
Office Support Systems Analysis and Design
- OSSE
-
Oriented Scintillation Spectrometer Experiment
- OSSE
-
Observing System Simulation Experiment
- OSSIEC
-
Osun State Independent Electoral Commission
- OSSIU
-
Orbiter-Space Station Interface Unit
The abbreviation OSSIU (Orbiter-Space Station Interface Unit) includes the abbreviation SS (Space Station).
- OSSRH
-
Orbiter Subsystem Requirements Handbook
- OSST
-
Order of the Most Holy Trinity
- OSSTMM
-
Open Source Security Testing Methodology Manual
The abbreviation OSSTMM (Open Source Security Testing Methodology Manual) includes the abbreviation OS (Open Source).
- OST
-
Orbiter Support Trolley
- OST
-
Office of the Secretary of Transportation
- OSTA
-
Office of Space and Terrestrial Applications
- OSTC
-
Open Systems Testing Consortium
- OSTDS
-
Office of Space Tracking and Data Systems
- OSTF
-
Off-Site Test Facility
The abbreviation OSTF (Off-Site Test Facility) includes the abbreviation TF (Test Facility).
- OSTO
-
Office of Space Transportation Operations
- OSTP
-
Office of Science and Technology Policy
- OSTP
-
Orbiting System Test Plan
The abbreviation OSTP (Orbiting System Test Plan) includes the abbreviation TP (Test Plan).
- OSTS
-
Office of Space Transportation Systems
- OSV
-
Oostzaanse Sport Vereniging
- OSV
-
Overdinkelse Sport Vereniging
- OSVIC
-
Organismo Sardo di Volontariato Internazionale Cristiano
- OSWA
-
Organizational Systems Wireless Auditor
- OT
-
Office de tourisme
- OT
-
Operación Triunfo
- OT
-
Onafhankelijk Toneel
- OT
-
Occupational Therapy
- OT
-
Ordo Teutonicus
- OT
-
Organisation Todt