| Acronym | Sense | Language | Topics |
|---|---|---|---|
| Ofta | Observatoire Français des Techniques Avancées | In French | → Research institutes → Engineering, technology |
| OGAF | Opérations Groupées d'Aménagement du Foncier | In French | |
| OGD | Oesophago-Gastro-Duodénoscopie | In French | → Diagnostics |
| OGE | Ordre des Géomètres Experts | In French | → Organizations and associations → Geodesy, cartography |
| OGHB | Office Généalogique et Héraldique de Belgique | In French | → Organizations and associations → Genealogy → Heraldry → Belgium |
| OGM | Organisme Génétiquement Modifié | In French | → Biological sciences → Biotechnology |
| OGOPA | Outil de Gestion Opérationnelle des Produits et Activités | In French | → Software → Management |
| OGP | Organisation et Gestion de la Production | In French | → Management |
| OGS | Opération Grand Site | In French | |
| OHMI | Office de l'Harmonisation dans le Marché Intérieur (http://oami.europa.eu) = OHIM | Office for Harmonization in the Internal Market | In English = OHMI | Oficina per a l'Harmonització del Mercat Interior | In Catalan = HABM | Harmonisierungsamt für den Binnenmarkt | In German = OAMI | Oficina de Armonización del Mercado Interior | In Spanish = UAMI | Ufficio per l'Armonizzazione nel Mercato Interno | In Italian = IHMI | Instituto de Harmonização do Mercado Interno | In Portuguese |
In French | → European Union → Industrial property → Artistic property → Europe |
| OHP | Observatoire de Haute-Provence (www.obs-hp.fr) | In French | → Observatories |
| OI | Ordinateur Individuel | In French | → Serial publications, periodicals → Computer science |
| OIAC | Organisation pour l'Interdiction des Armes Chimiques (www.opcw.org) = OPWC | Organisation for the Prohibition of Chemical Weapons | In English |
In French | → Organizations and associations → International relations → Military engineering |
| OIBT | Organisation Internationale des Bois Tropicaux (www.itto.or.jp) = ITTO | International Tropical Timber Organization | In English = OIMT | Organización Internacional de las Maderas Tropicales | In Spanish |
In French | → Organizations and associations → Nature and society → Timber and woodworking industry |
| OICA | Organisation Internationale des Constructeurs d'Automobiles (http://oica.net) | In French | → Organizations and associations → Mechanical engineering → Automobile manufacturing |
| OICTS | Ordre International Chevaleresque de Tradition Solaire | In French | → Modern spiritual movements |
| OIE | Office International des Épizooties (www.oie.int) | In French | → Organizations and associations → Veterinary medicine |
| OIE | Opérations Inter-Établissements | In French | → Accounting |
| OIE | Opération Inter-Établissement | In French | |
| OIEau | Office International de l'Eau | In French | → Organizations and associations → Hydrology → Environmental technology, water supply, waste management |
| OIM | Organisation Internationale pour les Migrations (www.iom.int) = IOM | International Organization for Migration | In English = IOM | Internationale Organisation für Migration | In German = ΔΟΜ | Διεθνής Οργανισμός Μετανάστευσης | In Greek = OIM | Organización Internacional para las Migraciones | In Spanish = OIM | Organizzazione Internazionale per le Migrazioni | In Italian = LNBM | Lisangá lya nkóta na bokei o mitili | In Lingala = TMO | Tarptautinė Migracijos Organizacija | In Lithuanian = IOM | Internationale Organisatie voor Migratie | In Dutch = МОМ | Международная организация по миграции | In Russian = МОМ | Міжнародна організація з міграції | In Ukrainian |
In French | → International organizations → Migrations |
| OIML | Organisation Internationale de Métrologie Légale | In French | → Organizations and associations → Standardization |
| OIN | Opération d'Intérêt National | In French | → Politics → Regional planning |
| OIO | Opérations Inter-Organismes | In French | → Accounting |
| OIO | Opération Inter-Organisme | In French | |
| OIP | Omnium International des Pétroles | In French | → 665 |
| OIPC | Organisation Internationale de Police Criminelle | In French | → Organizations and associations → International relations → Criminology → Police |
| OIQ | Ordre des Ingénieurs du Québec (www.oiq.qc.ca) | In French | → Organizations and associations → Engineering, technology |
| OIR | Organisation Internationale pour les Réfugiés = IRO | International Refugee Organization | In English |
In French | → United Nations → Migrations |
| OIT | Organisation Internationale du Travail = ILO | International Labour Organization | In English = ILO | Internacia Labor-Organizo | In Esperanto |
In French | → United Nations → Labour, labour economics |
| OIV | Organisation Internationale de la Vigne et du Vin | In French | → Organizations and associations → Agricultural sciences → Beverage industry |
| OJC | Organisation Juive de Combat | In French | → Organizations and associations → Judaism → History |
| OJD | Office de Justification de la Diffusion des Supports de Publicité | In French | → Advertising |
| OL | Olympique Lyonnais (www.olweb.fr) | In French | → Organizations and associations → Sport, physical exercises → France |
| OLAF | Office européen de Lutte Antifraude | In French | → Trade → Criminal law → Industrial property |
| OLIMP | Outil Local d'Information pour la Maîtrise des Produits dangereux | In French | → Software |
| OLP | Organisation de Libération de la Palestine = PLO | Palestine Liberation Organization | In English = FAT | Fələstin Azadlıq Təşkilatı | In Azerbaijani = ООП | Организация за освобождение на Палестина | In Bulgarian = OAP | Organització per a l'Alliberament de Palestina | In Catalan = OOP | Organizace pro osvobození Palestiny | In Czech = OLP | Organización para la Liberación de Palestina | In Spanish = PAE | Palestinaren Askapenerako Erakundea | In Basque = OLP | Organizaĵo por Liberigo de Palestino | In Esperanto = OLP | Organización para a Liberación da Palestina | In Galician = PLO | 팔레스타인 해방기구 | In Korean = OLP | Organização para a Libertação da Palestina | In Portuguese = OWP | Organizacja Wyzwolenia Palestyny | In Polish = PLO | パレスチナ解放機構 | In Japanese = ПЛО | Палестинската ослободителна организација | In Macedonian = PIO | Palestinos išsivadavimo organizacija | In Lithuanian = პგო | პალესტინის განთავისუფლების ორგანიზაცია | In Georgian = OLP | Organizzazione per la Liberazione della Palestina | In Italian = ООП | Организация освобождения Палестины | In Russian = ПЛО | Палестинска ослободилачка организација | In Serbian = PLO | 巴勒斯坦解放組織 | In Chinese = OВП | Організація визволення Палестини | In Ukrainian = FKÖ | Filistin Kurtuluş Örgütü | In Turkish |
In French | → Political parties and movements |
| OM | Olympique de Marseille | In French | → Sport, physical exercises → France |
| OMC | Organisation Mondiale du Commerce = MOK | Monda Organiz(aĵ)o pri Komerco | In Esperanto = MKO | Monda Komerca Organizaĵo | In Esperanto = WTO | World Trade Organization | In English |
In French | → International relations → Trade |
| OMC | Office Municipal de la Culture | In French | → 351 |
| OMD | Oedème Maculaire Diabétique | In French | → Pathology → Ophthalmology |
| OMD | Objectifs du Millénaire pour le Développement = MDG | Millennium Development Goals | In German = OSM | Obiettivi di Sviluppo del Millennio | In Italian = TPM | Tujuan Pembangunan Milenium | In Indonesian = ODM | Objetivos de Desarrollo del Milenio | In Spanish = MDM | Metas de Desenvolvimento do Milênio | In Portuguese |
In French | → United Nations → Development |
| OMEGA | Outil pour les Mutuelles des Électriciens et GAziers | In French | → Software → Insurance → Energy economics → Electrical engineering |
| OMI | Organisation Maritime Internationale = IMO | International Maritime Organization | In English = IMO | Internacia Mar-Organizo | In Esperanto |
In French | → International relations → Marine research, oceanography → 6295 → Agricultural sciences |
| OMJ | Oscillation de Madden-Julian = MJO | Madden-Julian Oscillation | In English |
In French | → Meteorology, climatology |
| OMLA | Office Municipal Loisirs-Animation | In French | → 351 → Entertainment |
| OMM | Organisation Météorologique Mondiale (www.wmo.int) = MMO | Monda Meteologia Organizo | In Esperanto = WMO | World Meteorological Organization | In English |
In French | → Organizations and associations → Meteorology, climatology → United Nations |
| OMMI | Oblates Missionnaires de Marie Immaculée = OMMI | Oblate Missionaries of Mary Immaculate | In English = OMMI | Oblatas Misioneras de Maria Inmaculada | In Spanish = OMMI | Oblate Missionarie di Maria Immacolata | In Italian |
In French | → Roman catholic church |
| OMNSH | Observatoire des Mondes Numériques en Sciences Humaines (www.omnsh.org) | In French | → Organizations and associations → Computer science → Social sciences |
| OMP | Observatoire Midi-Pyrénées | In French | → Observatories → Earth sciences |
| OMPI | Organisation Mondiale de la Propriété Intellectuelle (www.wipo.int) = WIPO | World Intellectual Property Organisation | In English = MOIP | Monda Organizo pri Intelekta Proprieto | In Esperanto = WIPO | World Intellectual Property Organization | In English = OMPI | Organizaţia Mondială a Proprietăţii Intelectuale | In Romanian |
In French | → International relations → Industrial property → Artistic property |
| OMT | Organe de Manœuvre Télécommandé | In French | → Mechanical engineering → Telecommunications |
| OMT | Organisation Mondiale du Tourisme = WTO | World Tourism Organization | In English = СТО | Светска туристичка организација | In Russian = OMT | Organização Mundial de Turismo | In Portuguese = OMT | Organizzazione Mondiale del Turismo | In Italian = OMT | Organización Mundial del Turismo | In Spanish = OMT | Organizazion Mondiâl dal Turisim | In Friulian |
In French | → United Nations → Tourism |
| OMT | Ordre Martiniste Traditionnel | In French | → Religion, theology → Occult sciences |
| OMVG | Organisation pour la Mise en Valeur du fleuve Gambie | In French | → Organizations and associations → Development → Nature and society → Environmental technology, water supply, waste management |
| OMVS | Organisation pour la Mise en Valeur du fleuve Sénégal | In French | → Organizations and associations → 337 → Development → Agricultural sciences |
| ONBAH | Office National des Barrages et des Aménagements Hydro-agricoles | In French | → Central administration → 627 → Agricultural sciences |
| ONC | Organisme National de Certification | In French | → Standardization |
| ONC | Office National de la Chasse | In French | → Central administration → Fishing, hunting |
| ONCF | Office National des Chemins de Fer | In French | → Transport and postal services |
| OND | Observatoire National de la Délinquance | In French | → Sociology → Law, jurisprudence |
| ONE | Office National d'Électricité (www.one.org.ma) | In French | → Central administration → Electrical engineering → Morocco |
| ONEP | Office National d'Études et de Planification | In French | |
| ONEP | Office National de l'Eau Potable | In French | → Organizations and associations → Environmental technology, water supply, waste management |
| ONERA | Office National d'Études et de Recherches Aéronautiques | In French | → Aeronautics, aircraft |
| ONERA | Office National d'Études et de Recherches Aérospatiales (www.onera.fr) | In French | → Research institutes → Aeronautics, aircraft → Spaceflight engineering, astronautics → France |
| ONF | Office National des Forêts (www.onf.fr) | In French | → Central administration → Forestry → France |
| ONG | Organisation Non Gouvernementale = ONGs | Organizações Não Governamentais | In Portuguese = NGO | Non-Governmental Organization | In English = NGO | Nichtregierungsorganisation | In German = ANG | Aozadur Nann-Gouarnamantel | In Breton = NRO | Ne-Registara Organizo | In Esperanto = ONG | Organizzazione non governativa | In Italian = LSM | Lembaga Swadaya Masyarakat | In Indonesian = ONG | Organización non gobernamental | In Galician = GKE | Gobernuz Kanpoko Erakunde | In Basque = ONG | Organización no gubernamental | In Spanish = ΜΚΟ | Μη κυβερνητικές οργανώσεις | In Greek = NNO | Nevládní nezisková organizace | In Czech = ONG | Organització no governamental | In Catalan = ННО | Неурядові неприбуткові організації | In Ukrainian = ONG | Organização não governamental | In Portuguese = NGO | Niet-gouvernementele organisatie | In Dutch = NVO | Nevyriausybinė organizacija | In Lithuanian |
In French | → Organizations and associations |
| ONH | Organisme National Habilité | In French | |
| ONIAM | Office National d'Indemnisation des Accidents Médicaux | In French | → Central administration → Medicine |
| ONIDOL | Organisation Nationale Interprofessionnelle Des Oléagineux | In French | → Organizations and associations → Agricultural sciences |
| ONISEP | Office National d'Information Sur les Enseignements et les Professions | In French | → Labour, labour economics → Education |
| ONISR | Observatoire National Interministériel de la Sécurité Routière | In French | → Central administration → Transport and postal services |
| ONREK | Office National de Recherche et d'Évaluation en Kinésithérapie | In French | → Medicine |
| ONS | Opérateur National de Sécurité | In French | |
| ONS | Organisme National de Surveillance | In French | |
| ONT | Office National du Tourisme | In French | → Central administration → Tourism |
| ONTO | Ordre Nouveau des Templiers Opératifs | In French | → Modern spiritual movements |
| ONU | Organisation des Nations Unies (www.un.org/french/) = UN | Unuigintaj Nacioj | In Esperanto = 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 = HN | Huñusqa Nasyunkuna | In Quechua = PBB | Pertubuhan Bangsa-bangsa Bersatu | In Malay = NA | Náisiúin Aontaithe | In Irish = ÜRO | Ühinenud Rahvaste Organisatsioon | In Estonian = SÞ | Sameinuðu þjóðanna | In Icelandic |
In French | → International relations → United Nations |
| ONZUS | Observatoire National des Zones Urbaines Sensibles | In French | → Regional planning |
| OP | Ordre de Paiement | In French | → Prices → Accounting |
| OP | Organisation de Producteur | In French | → Organizations and associations |
| OP | Orientation Professionnelle | In French | → Labour, labour economics |
| OP | Ouvrier Professionnel | In French | → Labour, labour economics |
| OPA | Offre Publique d'Achat | In French | → Economics |
| OPA | Océan PArallélisé | In French | → Marine research, oceanography |
| OPAC | Office Public d'Aménagement et de Construction | In French | → Public administration, government → Construction → Accommodation |
| OPAH | Opération Programmée d'Amélioration de l'Habitat | In French | → Accommodation |
| OPALE | Outil de Pilotage et d'Aide à L'Expertise | In French | → Software |
| OPALE | Outil Probabiliste des ALimentations Électriques | In French | → Software → Electrical engineering |
| OPC | Organisation pour la Prévention de la Cécité (www.opc.asso.fr) | In French | → Organizations and associations → Ophthalmology |
| OPC | Office de la Protection du Consommateur (www.opc.gouv.qc.ca) | In French | → Central administration → Consumerism |
| OPC | Organisme de Placement Collectif | In French | → Finance |
| OPC | Ordonnancement, Pilotage et Coordination | In French | → Civil engineering → Construction |
| OPC | Observatoire des Politiques Culturelles (www.observatoire-culture.net) | In French | → Organizations and associations → Politics → Civilization, culture, progress |
| OPC | Offre Préalable de Crédit | In French | → Banks |
| OPCI | Organisme de Placement Collectif dédié à l'Immobilier | In French | → Finance |
| OPDQ | Ordre Professionnel des Diététistes du Québec | In French | → Organizations and associations → Personal health and hygiene → Canada |
| OPECST | Office Parlementaire d'Évaluation des Choix Scientifiques et Technologiques | In French | → Parliaments, representation → Research policy → Engineering, technology |
| OPEN | Organisation de Producteurs d'Énergie Nucléaire | In French | → Organizations and associations → Energy economics → Nuclear technology |
| OPEP | Organisation des Pays Exportateurs de Pétrole = OPEC | Organization of the Petroleum Exporting Countries | In English = OPEC | Organization of Petroleum Exporting Countries | In English = OPEL | Organizaĵo de Petrol-Eksportaj Landoj | In Esperanto = OPEP | Organização dos Países Exportadores de Petróleo | In Portuguese = OPEP | Organización de Países Esportadores de Petroleu | In Asturian = OPEP | Organización de Países Exportadores de Petróleo | In Spanish = OPEP | Organització de Països Exportadors de Petroli | In Catalan = ОПЕК | Организација на земји извознички на нафта и нафтени деривати | In Macedonian |
In French | → Chemical technology → Mining → 665 |
| OPERA | Observatoire PErmanent de la RAdioactivité | In French | → Organizations and associations → Nuclear technology |
| OPESH | Observatoire de la Pauvreté et de l'Exclusion Sociale en Haïti | In French | → Organizations and associations → Social welfare |
| OPG | Objectif Projet Groupe | In French | |
| OPGC | Observatoire de Physique du Globe de Clermont-Ferrand (wwwobs.univ-bpclermont.fr) | In French | → Research institutes → Geophysics → France |
| OPhL | Optique Philippe Lafont | In French | |
| OPI | Office du Périmètre d'Irrigation | In French | → Public administration, government → Agricultural sciences |
| OPI | Objectif Projet Individuel | In French | |
| OPIC | Office de la Propriété Intellectuelle du Canada (www.opic.ic.gc.ca) | In French | → Central administration → Artistic property |
| OPIP | Office de Promotion des Investissements Privés | In French | → 33972 |
| OPJ | Officier de Police Judiciaire | In French | → Police |
| OPO | Offre à Prix Ouvert | In French | → Economics |
| OPPBTP | Organisme Professionnel de la Prévention du Bâtiment Travaux Publics | In French | → Organizations and associations → Civil engineering → Construction |
| OPPBTP | Organisme Professionnel de Prévention du Bâtiment et des Travaux Publics (www.oppbtp.fr) | In French | → Organizations and associations → Labour, labour economics → Medicine → Civil engineering → Construction → France |
| OPPBTP | Organisme Professionnel de la Prévention du Bâtiment et des Travaux Publics (www.oppbtp.fr) | In French | → Organizations and associations → Construction → Civil engineering |
| OPPS | Observatoire Paritaire du Portage Salarial | In French | → Labour, labour economics |
| OPPTIC | Organisation de Professionnels pour la Promotion des TIC en région Languedoc-Roussillon | In French | → Networks, communication → Organizations and associations → Telecommunications |
| OPQCM | Office Professionnel de Qualification des Conseils en Management | In French | → Consulting |
| OPRI | Office de Protection contre les Rayonnements Ionisants (www.opri.fr) | In French | → Organizations and associations → Nuclear technology |
| OPSIS | Observation et Prospective sur la Société de l'Information et ses Services | In French | → Computer science → Telecommunications |
| OPT | Opération de Patrimoine et Trésorerie | In French | → Finance → Accounting |
| OPT | Opérations de Patrimoine et Trésorerie | In French | → Accounting |
| OPTILE | Organisation Professionnelle des Transports d'Île-de-France | In French | → Organizations and associations → Transport and postal services → France |
| OQLF | Office Québécois de la Langue Française (www.oqlf.gouv.qc.ca) | In French | → Organizations and associations → Dictionaries → Linguistics → Canada |
| OR | Organisme de Rattachement | In French | |
| ORA | Organisation de Résistance de l'Armée | In French | → Military affairs → History |
| ORA | Opérateur Régional des Achats | In French | → 34745 |
| ORA | Organisation Révolutionnaire Anarchiste | In French | → Anarchist organizations |
| ORANO | Opérateur Régional d'Achats Nord-Ouest | In French | → 34745 |
| ORAP | Organisation Associative du Parallélisme | In French | → Organizations and associations → Computer science |
| ORCADE | Outil de Reporting, de Consolidation et d'Aide à la DÉcision | In French | → Software → Management |
| ORCHIDEE | ORdonnancement des CHaînes Informatiques Dirigées par les Événements et les Enchaînements | In French | → Software |
| ORE | Opérateur de Réseau Électricité | In French | → Energy economics → Electrical engineering |
| ORE | Observatoire de Recherche en Environnement | In French | → Nature → Environment, environmental sciences |
| OREM | Officier de Renseignement d'État-Major | In French | → Military affairs |
| ORG | Opérateur de Réseau Gaz | In French | → Energy economics |
| ORGÉV | Omnium de Recherche sur la Génétique du Vieillissement | In French | → Biotechnology |
| ORGM | Office National de Recherche Géologique et Minière | In French | |
| ORGT | Officier Renseignement de Groupement Tactique | In French | → Military affairs |
| ORGUE | Outils de Réorganisation de la Gestion Unifiée des Entités | In French | → Software |
| ORIC | ORganisation Informatique Comptable | In French | → Computer science → Accounting |
| ORM | Opérateur de Réseau Mixte | In French | |
| ORMP | Office Rwandais des Marchés Publics | In French | → Central administration |
| ORPCF | Organisation pour la Reconstruction du Parti Communiste de France | In French | → Communist parties → France |
| ORPHEM | Organisation Régionale des Pharmaciens Hospitaliers de l'Est Méditerranéen | In French | → Organizations and associations → Pharmacology, toxicology |
| ORR | Ordre de Réduction de Recettes | In French | → Accounting |
| ORSE | Observatoire sur la Responsabilité Sociétale des Entreprises | In French | → Ethics → Social sciences |
| ORSEC | Organisation de la Réponse de SEcurité Civile | In French | → Central administration → France |
| ORT | Organisation Reconstruction Travail | In French | → History |
| ORTAS | Organisme de la Radio-Télévision Arabe Syrienne | In French | → Telecommunications |
| ORU | Opération de Rénovation Urbaine | In French | → Accommodation → Architecture |
| OS3B | Open Software Blanc Bleu Belge | In French | → Organizations and associations → Software → Belgium |
| OSA | Officier Supérieur Adjoint | In French | → Military affairs |
| OSC | Orientations Stratégiques Communautaires | In French | → European Union |
| OSCAR | Outils de Services, Conseils et Assistance Rapide | In French | → Computer science |
| OSCE | Organisation pour la Sécurité et la Coopération en Europe (www.osce.org) = OSCE | Organization for Security and Cooperation in Europe | In English |
In French | → International relations → Europe |
| OSCI | Organisation des Opérateurs Spécialisés du Commerce International | In French | → Organizations and associations → Trade |
| OSE | Oeuvre de Secours aux Enfants | In French | → Organizations and associations → Politics |
| OSGE | Observatoire Statistique du Groupe EDF | In French | → Energy economics → Electrical engineering |
| OSIRIS | Observatoire des Systèmes d'Informations, des Réseaux et des Inforoutes au Sénégal (www.osiris.sn) | In French | → Organizations and associations → Software → Networks, communication → Telecommunications |
| OSIRIS | Organisation et Système Informatisé de Rangement des Informations Stratégiques | In French | → Software |
| OSIRIS | Outil de Synthèse Informatique des Résultats et Indicateurs Standardisés | In French | → Software |
| OSMOI | Organisation Spéciale de la Main d'Oeuvre Immigrée | In French | → Political parties and movements → History |
| OSQC | Outil Standard de la Qualité Comptable | In French | → Accounting |
| OT | Ordre de Travail | In French | → Labour, labour economics |
| OT | Organisation Todt | In French | → Military engineering → History |
| OT | Office de tourisme | In French | → Tourism |
| OTAN | Organisation du Traité de l'Atlantique Nord (www.nato.int) = OTAN | Organització del Tractat de l'Atlàntic Nord | In Catalan = NATO | North Atlantic Treaty Organisation | In English = OTAN | Organizazión d'o Tratau de l'Atlantico Norte | In Aragonese = OTAN | Organización del Tratáu del Atlánticu Norte | In Asturian = AFNA | Aozadur Feur-emglev Norzh-Atlantel | In Breton = ন্যাটো | উত্তর আটলান্টিক নিরাপত্তা জোট | In Bengali = NATO | Οργανισμός Βορειοατλαντικού Συμφώνου | In Greek = NATO | Nordatlantikvertrag-Organisation | In German = OTAN | Organización del Tratado del Atlántico Norte | In Spanish = NATO | Nord-Atlantika Traktat-Organizo | In Esperanto = NAFO | Noard-Atlantyske Ferdrachsorganisaasje | In Frisian = OTAN | Organización do Tratado do Atlántico Norte | In Galician = ნატო | ჩრდილოატლანტიკური თანამშრომლობის ორგანიზაცია | In Georgian = OTAN | Organização do Tratado do Atlântico Norte | In Portuguese = OTNA | Organizaciya le Tratatosko le Nordutne Atlantikosko | In Vlax Romani = OTAN | Organizaţia Tratatului Atlanticului de Nord | In Romanian = NATO | Organisatschoon vun den Noordatlantikverdrag | In Low German = NAVO | Noord-Atlantische Verdragsorganisatie | In Dutch |
In French | → International relations → Military affairs |
| OTI | Ordre de Transfert Interne | In French | |
| OTJC | Ordre du Temple de la Jérusalem Céleste | In French | → Modern spiritual movements |
| OTP | Organigramme Technique de Projet | In French | |
| OTS | Ordre du Temple Solaire | In French | → Modern spiritual movements |
| OUA | Organisation de l'Unité Africaine | In French | → International relations → Africa |
| OULIPO | OUvroir de LIttérature POtentielle | In French | → Literature |
| OVA | Organisme Vérificateur Agréé | In French | |
| OVNI | Objet Volant Non Identifié = 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 = UFO | Uidentificeret flyvende objekt | In Danish = 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 French | → Spaceflight engineering, astronautics |
| OVR | Opération Villages Roumains | In French | |
| ÖVV | Österreichischer Volleyball Verband (www.volleynet.at) | In French | → Organizations and associations → 7963 → Austria |
| P | Phosphore = P | Fosfor | In Dutch = P | Phosphor | In German = P | Phosphorus | In English = P | Fósforo | In Esperanto |
In French | → Chemistry |
| P | Proline = P | Proline | In English = P | প্রোলিন | In Bengali = P | Prolina | In Catalan = P | Prolin | In Danish = P | Prolin | In German = P | Prolina | In Spanish = P | Prolino | In Esperanto = P | 프롤린 | In Korean = P | Prolin | In Croatian = P | Prolin | In Indonesian = P | Prolina | In Italian = P | פרולין | In Hebrew = P | Prolīns | In Latvian = P | Prolin | In Letzeburgesh = P | Prolinas | In Lithuanian = P | Prolin | In Hungarian = P | Proline | In Dutch = P | プロリン | In Japanese = P | Prolina | In Polish = P | Prolina | In Portuguese = P | Пролин | In Russian = P | Proliini | In Finnish = P | Prolin | In Swedish = P | Prolin | In Turkish = P | Пролін | In Ukrainian = P | 脯氨酸 | In Chinese |
In French | → Biochemistry, biophysics |
| P2IC | Programme Interne aux Instituts Carnot | In French | → Research policy |
| PA | Pyrénées-Atlantiques | In French | → History |
| PA | Petites Annonces | In French | → Graphic industries, printing, publishing |
| PA | Proviseur Adjoint | In French | → Education |
| PA | Puissance Atteinte | In French | → Energy economics |
| PA | Protocole Additionnel = AP | Additional Protocol | In English |
In French | → International law |
| PA | Principal Adjoint | In French | → Education |
| PA | Préjudice d'Agrément | In French | |
| PA | Présence Africaine | In French | → Serial publications, periodicals → Politics → Africa |
| PAA | Population Active Agricole | In French | → Agricultural sciences |
| PAC | Politique Agricole Commune = PAC | Política Agrícola Comunitària | In Catalan = SZP | Společná Zemědělská Politika | In Czech = GAP | Gemeinsame Agrarpolitik | In German = ΚΑΠ | Κοινή αγροτική πολιτική | In Greek = KAP | Komuna Agrikultura Politiko | In Esperanto = PAC | Política Agrícola Común | In Spanish = KAP | Közös agrárpolitika | In Hungarian = PAC | Politica Agricola Comune | In Italian = BŽŪP | Bendroji žemės ūkio politika | In Lithuanian = GLB | Gemeenschappelijk Landbouwbeleid | In Dutch = CAP | Common Agricultural Policy | In English = WPR | Wspólna polityka rolna | In Polish = ССП | Спільна сільськогосподарська політика | In Ukrainian |
In French | → European Union → Agricultural sciences |
| PAC | Programme d'Actions Concertées | In French | |
| PAC | Pile à combustible | In French | → Energy economics → Electrical engineering |
| PACA | Provence Alpes Côte d'Azur | In French | → Geography |
| PACS | PActe Civil de Solidarité | In French | → Law, jurisprudence |
| PACTE | Pile À Combustible Tout Électrolyte | In French | → 6298 → Chemical technology |
| PACTE | Parcours d'Accès aux Carrières de la fonction publique Territoriale, hospitalière et d'État | In French | → Education → Public administration, government |
| PAD | Plan Annuel de Développement | In French | |
| PAE | Projet d'Action Éducative | In French | → Education |
| PAE | Programme d'Action pour l'Environnement | In French | → Nature and society |
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