| 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 | Organisme National de Surveillance | In French | |
| 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 | FRP = 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 | NDS = 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 | Organisation de Producteur | In French | → Organizations and associations |
| OP | Ouvrier Professionnel | In French | |
| OPAC | Office Public d'Aménagement et de Construction | In French | → Accommodation → Building |
| OPAH | Opération Programmée d'Amélioration de l'Habitat | In French | → Accommodation |
| OPDQ | Ordre Professionnel des Diététistes du Québec | In French | → Organizations and associations → Personal health and hygiene |
| OPECST | Office Parlementaire d'Évaluation des Choix Scientifiques et Technologiques | In French | → Research policy → Politics → Engineering, technology |
| OPEN | Organisation de Producteurs d'Énergie Nucléaire | In French | → Organizations and associations → 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 |
| OPG | Objectif Projet Groupe | In French | |
| OPI | Objectif Projet Individuel | In French | |
| OPI | Office du Périmètre d'Irrigation | In French | → Public administration, government → Agricultural sciences |
| OPIP | Office de Promotion des Investissements Privés | In French | → 33972 |
| OPJ | Officier de Police Judiciaire | In French | → Police |
| 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 → Building |
| OPPBTP | Organisme Professionnel de la Prévention du Bâtiment Travaux Publics | In French | → Organizations and associations → Civil engineering → Building |
| 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 | → 6592 |
| OPRI | Office de Protection contre les Rayonnements Ionisants | In French | → Nuclear technology |
| OPSIS | Observation et Prospective sur la Société de l'Information et ses Services | In French | → Computer science → Telecommunications |
| OQLF | Office Québécois de la Langue Française (www.oqlf.gouv.qc.ca) | In French | → Dictionaries → Linguistics |
| ORA | Organisation de Résistance de l’Armée | In French | → 355 → History |
| ORAP | Organisation Associative du Parallélisme | In French | → Computer science → Organizations and associations |
| ORE | Observatoire de Recherche en Environnement | In French | → Nature → Environment, environmental sciences |
| ORE | Opérateur de Réseau Électricité | In French | → Electrical engineering |
| ORGM | Office National de Recherche Géologique et Minière | In French | |
| ORPCF | Organisation pour la Reconstruction du Parti Communiste de France | In French | → Political parties and movements |
| ORPHEM | Organisation Régionale des Pharmaciens Hospitaliers de l'Est Méditerranéen | In French | → Organizations and associations → Pharmacology, toxicology |
| ORSE | Observatoire sur la Responsabilité Sociétale des Entreprises | In French | → Ethics → Social sciences |
| ORT | Organisation Reconstruction Travail | In French | → History |
| ORTAS | Organisme de la Radio-Télévision Arabe Syrienne | In French | → Telecommunications |
| OS3B | Open Software Blanc Bleu Belge | In French | → Organizations and associations → Software |
| OSC | Orientations Stratégiques Communautaires | In French | → European Union |
| OSCE | Organisation pour la Sécurité et la Coopération en Europe = OSCE | Organization for Security and Cooperation in Europe | In English |
In French | → International relations |
| 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 | → Electrical engineering |
| OSMOI | Organisation Spéciale de la Main d’Oeuvre Immigrée | In French | → Political parties and movements → History |
| 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 | NDS |
In French | → International relations |
| OTJC | Ordre du Temple de la Jérusalem Céleste | In French | → Modern spiritual movements |
| OTS | Ordre du Temple Solaire | In French | → Modern spiritual movements |
| OUA | Organisation de l’Unité Africaine | In French | → International relations |
| 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 | In French | → 7963 |
| 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 |
| P | Phosphore = P | Fosfor | In Dutch = P | Phosphor | In German = P | Phosphorus | In English = P | Fósforo | In Esperanto |
In French | → Chemistry |
| P2IC | Programme Interne aux Instituts Carnot | In French | → Research policy |
| PA | Petites Annonces | In French | → Graphic industries, printing, publishing |
| PA | Pyrénées-Atlantiques | In French | → History |
| PA | Présence Africaine | In French | → Serial publications, periodicals → Politics |
| PAA | Population Active Agricole | In French | → 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 |
| PAE | Programme d'Action pour l'Environnement | In French | → Nature and society |
| PAE | Projet d'Action Éducative | In French | → Education |
| PAH | Port Autonome du Havre | In French | → Transport and postal services |
| PAIO | Permanence d'Accueil, d'Information et d'Orientation | In French | → Education → Labour, labour economics |
| PAL | Phosphatase Alcaline Leucocytaire | In French | → Enzymes → Blood and circulatory system |
| PAM | Programme Alimentaire Mondial = PMA | Programa Mundial d'Alimentos | In Asturian = WFP | World Food Programme | In English = WFP | 세계 식량 계획 | In Korean = WFP | მსოფლიო სასურსათო საბჭო | In Georgian = WFP | 国際連合世界食糧計画 | In Japanese = PAM | Programma Alimentare Mondiale | In Italian = PMA | Programa Mundial de Alimentos | In Spanish |
In French | → United Nations → 6123 → Agricultural sciences |
| PAM | Plan d’Action pour la Méditerranée | In French | |
| PAM | Port Autonome de Marseille (www.marseille-port.fr) | In French | → Transport and postal services |
| PAN-H | Plan d'Action National sur l'Hydrogène et les piles à combustible | In French | → 6208 |
| PAP-ND | Projet d'Action Personnalisée – Nouveau Départ | In French | → Labour, labour economics |
| PAPEETE | Pour Améliorer les Performances Énergétiques ET Environnementales | In French | → Energy economics → Electrical engineering |
| PAPG | Plan d'Amélioration de la Productivité Globale | In French | → Management |
| PAQ | Plan d’Assurance Qualité | In French | → Quality management |
| PARAK | Programme d'appui rural Aga Khan | In French | → Development → Agricultural sciences → Regional planning |
| PARE-PAP | Plan d'Aide à la Recherche d'Emploi - Projet d'Action Personnalisée | In French | → Labour, labour economics |
| PAREL | Programme d'Aide à la Remise en État des Logements | In French | → Accommodation |
| PAS | Prêt à l'Accession Sociale | In French | → Finance → Accommodation |
| PAS | Programme d’Ajustement Structurel | In French | |
| PASTEL | Plateforme d’Assistance Technique Européenne en Lorraine | In French | → Research policy → Regional administration |
| PAT | Prime à l'Aménagement du Territoire | In French | → Regional planning |
| PauLLA | Pau Logiciels Libres Association | In French | → Associations → Software → Operating systems |
| PAVE | Profession Architecture, Ville et Environnement | In French | → Research institutes → Regional planning → Architecture |
| PB | Point de Branchement | In French | → Telecommunications |
| PBB | Polybromobiphényle = PBB | Polybromierte Biphenyle | In German = PBB | Polybrominated biphenyl | In English |
In French | → Chemicals |
| PBDE | Polybromodiphényléther = PBDE | Polybromierte Diphenylether | In German = PBDE | Polybrominated diphenyl ether | In English |
In French | → Chemicals |
| PBR | Ponction-Biopsie Rénale | In French | → Diagnostics |
| PCA | Peugeot Citroën Automobiles | In French | → Automobile manufacturing |
| PCA | Programme Commun d'Activités | In French | → Management |
| PCB | Polychlorobiphényles | In French | → Chemicals |
| PCC | Parti Communiste Chinois | In French | → Political parties and movements |
| PCE | Psychologie Cognitive et Ergonomique | In French | → Psychology |
| PCE | Prêt à la Création d'Entreprise | In French | → Economics |
| PCEM | Premier Cycle des Études Médicales | In French | → Higher education, universities → Medicine |
| PCEP | Premier Cycle des Études Pharmaceutiques | In French | → Higher education, universities → Pharmacology, toxicology |
| PCF | Parti Communiste Français | In French | → Political parties and movements |
| PCFG | Probabilistic Context Free Grammars | In French | → Linguistics |
| PCG | Plan Comptable Général | In French | → Accounting |
| PCH | Poney Club de La Houssaye | In French | → Organizations and associations → Sport, physical exercises |
| PCH | Prestation de Compensation du Handicap | In French | → Medicine |
| PCH | Pharmacie Centrale des Hôpitaux | In French | → Pharmacology, toxicology |
| PCM | Plan Communal de Mobilité | In French | → Public administration, government → Regional planning → Transport and postal services |
| PCME | Physique, Chimie, Mécanique, Électronique | In French | → Higher education, universities → Physics → Chemistry → Mechanical engineering → Engineering, technology |
| PCMLF | Parti Communiste Marxiste-Léniniste de France | In French | → Political parties and movements |
| PCOF | Parti Communiste des Ouvriers de France | In French | → Political parties and movements |
| PCP | Politique Commune de la Pêche | In French | → European Union → Fishing, hunting |
| PCP | Physico-Chimie des Polymères | In French | → Chemical technology |
| PCRD | Programme-Cadre de Recherche et de Développement | In French | → Research policy → Engineering, technology |
| PCRDT | Programme Cadre de Recherche et Développement Technologique | In French | → International relations → Mathematics and natural sciences → Engineering, technology |
| PCSI | Projet de Coopération Scientifique Inter-universitaire | In French | → Research policy → Higher education, universities |
| PCUS | Parti Communiste de l'Union Soviétique = SKUS | Strollad Komunour an Unaniezh Soviedel | In Breton = KPdSU | Kommunistische Partei der Sowjetunion | In German = KПCC | Коммунистическая партия Советского Союза | In Russian = KПCC | Kommunistitscheskaja Partija Sowjetskogo Sojusa | In Russian = KSSR | Komunistická strana Sovětského svazu | In Czech = KPSU | Komunisma Partio de Soveta Unio | In Esperanto = PCUS | Partito Comunista dell'Unione Sovietica | In Italian = KPSU | Komunisma Partio de Soveta Unio | In Esperanto |
In French | → Political parties and movements |
| PDE | Plan de Déplacement d'Entreprise | In French | → Transport and postal services |
| PDEDMA | Plan Départemental d'Élimination des Déchets Ménagers et Assimilés | In French | → Nature |
| PDM | Product Data Management | In French | → Management |
| PDR | Plan de Développement Rural | In French | → Regional planning → Agricultural sciences |
| PDRN | Plan de Développement Rural National | In French | → Regional planning → Agricultural sciences |
| PDS | Parti Démocratique Sénégalais | In French | → Political parties and movements |
| PDU | Plan de Déplacements Urbains | In French | → Transport and postal services |
| PDU | Plan de Déplacement Urbain | In French | |
| PDUG | Plan de Desserte Urbain Gaz | In French | → Energy economics |
| PDUIF | Plan de Déplacements Urbains d'Ile-de-France | In French | → Public administration, government → Transport and postal services |
| PDZ | Point de Distribution de Zone | In French | → Telecommunications |
| PE | Parlement Européen (www.europarl.europa.eu) = PE | Parlamento Europeo | In Spanish = EP | Eŭropa Parlamento | In Esperanto = EP | European Parliament | In English = EP | Europäisches Parlament | In German = ΕΚ | Ευρωπαϊκό Κοινοβούλιο | In Greek = EP | Evropský parlament | In Czech = PE | Parlament Europeu | In Catalan = ЕП | Европейски парламент | In Bulgarian = AP | Avropa Parlamenti | In Azerbaijani = EP | Europäescht Parlament | In Letzeburgesh = PE | Parlamento Europeo | In Italian = EP | Európai Parlament | In Hungarian = EP | Európsky parlament | In Slovak = PE | Parlamentul European | In Romanian = PE | Parlamento Europeu | In Portuguese = PE | Parlament Europejski | In Polish = EP | Europees Parlement | In Dutch |
In French | → Parliaments, representation → European Union |
| PEB | Plan d'Exposition au Bruit | In French | → Politics |
| PEE | Plan Environnement Entreprise | In French | → Nature |
| PEF | Pôle (interdisciplinaire) d'Études Françaises | In French | → Higher education, universities → Language, linguistics, literature |
| PEF | Pôle Entrepreneuriat Féminin | In French | → Economics |
| PEG | Poly-Ethylène Glycol | In French | → Chemistry → Biochemistry, biophysics |
| PEGASUS | Partnership for a European Group of Aeronautic and Space Universities | In French | → Specialized or (poly)technical colleges → Higher education, universities → Aeronautics, aircraft → Vehicle engineering |
| PEGC | Professeur d'Enseignement Général des Collèges | In French | → Education |
| PEI | Projet Entreprise Innovante | In French | → 3384 → 650115 |
| PELS | Projet d'Économie Locale et Sociale | In French | → Economics → Social welfare |
| PENCE | Promouvoir Ensemble le Nouveau Confort Électrique | In French | → Electrical engineering |
| PEP | Pôle Européen de Plasturgie | In French | → Organizations and associations → Plastic industry |
| PÉPINES | Promotion des estriennes pour initier une nouvelle équité sociale | In French | → Feminism |
| PER | Plan d'Exposition aux Risques | In French | |
| PERG | Programme d’Électrification Rurale Global | In French | → Regional planning → Electrical engineering |
| PES | Polyéthersulfone | In French | → Chemical technology |
| PESC | Politique Étrangère et de Sécurité Commune = CFSP | Common Foreign and Security Policy | In English = GASP | Gemeinsame Außen- und Sicherheitspolitik | In German = WPZiB | Wspólna polityka zagraniczna i bezpieczeństwa | In Polish = GBVB | Gemeenschappelijk Buitenlands en Veiligheidsbeleid | In Dutch = PESC | Politica Estera e di Sicurezza Comune | In Italian = SZPB | Společná zahraniční a bezpečnostní politika | In Czech = СЗБП | Спільна зовнішня та безпекова політика | In Ukrainian = SZPB | Spoločná zahraničná a bezpečnostná politika | In Slovak = PESC | Política Externa e de Segurança Comum | In Portuguese = FUSP | Felles utenriks- og sikkerhetspolitikk | In Norwegian |
In French | → European Union → International relations → Police |
| PESD | Politique Européenne de Sécurité et de Défense | In French | → 355 → European Union |
| PETHA | Programme Ecorégional pour les Tropiques Humides et Subhumides de l'Afrique Subsaharienne | In French | |
| PEV | Parti Évangélique (www.evppev.ch) = EVP | Evangelische Volkspartei | In German |
In French | → Political parties and movements → Christianity |
| PEV | Paul-Émile Victor | In French | |
| PEV | Programme Élargi de Vaccination | In French | → Immunology and allergy |
| PFA | Paralysie flasque aiguë | In French | → Medicine |
| PFC | Plasma Frais Congelé | In French | → Blood and circulatory system → Pharmacology, toxicology |
| PFI | Plates-Formes Intégratrices | In French | → Engineering, technology |
| PFIL | Plate-Forme d'Initiative Locale | In French | → Organizations and associations → Economics |
| PFJ | Parlement Francophone des Jeunes | In French | → Parliaments, representation |
| PFT | Plate-Forme Technologique | In French | → Engineering, technology |
| PGC | Progiciel de Gestion du Contenu | In French | → Software → Knowledge management |
| PGCD | Plus Grand Commun Diviseur | In French | → Number theory |
| PGN | Professionnel Gaz Naturel | In French | → Energy economics |
| PGNC | Professionnel Gaz Naturel Confort | In French | → Energy economics |
| PGP | Professionnel Gaz Propane | In French | → Energy economics |
| PHB | Polyhydroxybutyrate | In French | → Chemistry → Chemicals |
| PHRC | Programme Hospitalier de Recherche Clinique | In French | → Research policy → Medicine |
| PIB | Produit Intérieur Brut | In French | → Economics |
| PIBA | Produit Intérieur Brut Agricole | In French | → Economics → Agricultural sciences |
| PIBM | Produit Intérieur Brut Marchand | In French | → Economics |
| PID | Proportionnel, Intégrale, Dérivée = PID | Proportional-Integral-Derivative | In English |
In French | → Mathematics |
| PIDE | Personnes Inscrites comme Demandeurs d’Emploi | In French | → Labour, labour economics |
| PIE | Pistolet à Impulsions Électroniques | In French | → Military engineering |
| PIGB | Programme International Géosphère-Biosphère | In French | → Earth sciences → Biological sciences |
| PIREF | Programme Incitatif de Recherche sur l'Éducation et la Formation | In French | → Education |
| PJ | Police Judiciaire | In French | → Police |
| PJCC | Pièce de Journal de la Comptabilité Centrale = CAJV | Central Accounting Journal Voucher | In English |
In French | → Accounting |
| PL | Programmation Linéaire | In French | → Mathematics |
| PLA-I | Prêt Locatif Aidé d'Intégration | In French | → Finance → Accommodation |
| PLAGL | Publications de l'Institut d'Astronomie et de Géophysique de Louvain | In French | → Serial publications, periodicals → Astronomy |
| PLATINOM | PLAte-forme Technologie et INstrumentation Optique et Microondes | In French | |
| PLF | Projet de Loi de Finances | In French | → Politics → Economics |
| PLI | Plan Local de l'Innovation | In French | → Research policy |
| PLI | Pays de la Loire Innovation | In French | → Regional administration → Engineering, technology → Research policy |
| PLM | Physiopathologie des Lipides et Membranes | In French | → Physiology → Pathology |
| PLM | Paris Lyon Méditerranée | In French | → Transport and postal services |
| PLM | Paris Lyon Marseille | In French | → Transport and postal services |
| PLNE | Programmation Linéaire en Nombres Entiers | In French | → Mathematics |
| PLO | Patronage Laïque d'Octeville | In French | → Organizations and associations → Education |
| PLP2 | Professeur de Lycée d'Enseignement Professionnel | In French | → Specialized or (poly)technical colleges |
| PLQ | Parti Libéral du Québec | In French | → Political parties and movements |
| PLUS | Prêt Locatif à Usage Social | In French | → Finance → Social welfare → Accommodation |
| PME | Petites et Moyennes Entreprises | In French | → Economics |
| PMG | Perspectives Métropolitaines Globales | In French | → Regional planning |
| PMG | Pôle Marketing Gaz | In French | → Energy economics |
| PMI | Petites et Moyennes Industries | In French | → Economics |
| PMII | Programmes Mobilisateurs pour l'Innovation Industrielle | In French | → Research policy → Industry, industrial policy |
| PMN | Programme de Mise à Niveau | In French | → Development |
| PMN | Physique des Matériaux et Nanostructures | In French | → Physics |
| PMRC | Programme Mondial de Recherche sur le Climat | In French | → Meteorology, climatology |
| PMSI | Programme de Médicalisation des Systèmes d'Information | In French | → Knowledge management → Data → Medicine |
| PMSV | Plan de Sauvegarde et de Mise en Valeur | In French | → Regional planning → Architecture |
| PMU | Pari Mutuel Urbain | In French | |
| PMV | Panneaux à Messages Variables | In French | → Graphic industries, printing, publishing |
| PN | Police Nationale | In French | → Police |
| PNAE-DD | Plan National d'Actions pour l'Environnement et le Développement Durable | In French | → Nature and society |
| PNB | Produit National Brut | In French | → Economics |