| OSMOI | Organisation Spéciale de la Main d’Oeuvre Immigrée | In French | → Political parties and movements → History |
| OSN | Organizácia Spojených národov = UN | Unuigintaj 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 = 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 = 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 Slovak | → International relations → United Nations |
| OSN | Organizace Spojených Národů | In Czech | → International relations → United Nations |
| OST | Office of the Secretary of Transportation | In English | → Central administration → Transport and postal services |
| OT | Occupational Therapy | In English | → Labour, labour economics → Medicine |
| OT | Office de tourisme | In French | → Tourism |
| OTAN | Organització del Tractat de l'Atlàntic Nord (www.nato.int) = 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 = OTAN | Organisation du Traité de l'Atlantique Nord | In French = 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 Catalan | → International relations |
| OTAN | Organizaţia Tratatului Atlanticului de Nord (www.nato.int) = NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA (look above) |
In Romanian | → International relations |
| OTAN | Organización del Tratáu del Atlánticu Norte (www.nato.int) = NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA (look above) |
In Asturian | → International relations |
| OTAN | Organización del Tratado del Atlántico Norte (www.nato.int) = NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA (look above) |
In Spanish | → International relations |
| OTAN | Organización do Tratado do Atlántico Norte (www.nato.int) = NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA (look above) |
In Galician | → International relations |
| OTAN | Organisation du Traité de l'Atlantique Nord (www.nato.int) = NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA (look above) |
In French | → International relations |
| OTAN | Organização do Tratado do Atlântico Norte (www.nato.int) = NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA (look above) |
In Portuguese | → International relations |
| OTAN | Organizazión d'o Tratau de l'Atlantico Norte (www.nato.int) = NATO, AFNA, ন্যাটো, NAFO, ნატო, OTNA (look above) |
In Aragonese | → International relations |
| ÖTK | Österreichischer Touristenklub | In German | → Tourism |
| OTNA | Organizaciya le Tratatosko le Nordutne Atlantikosko (www.nato.int) = OTAN, NATO, AFNA, ন্যাটো, NAFO, ნატო (look above) |
In Vlax Romani | → International relations |
| OTP | Országos Takarékpénztár | In Hungarian | → Economics |
| OUA | Organisation de l’Unité Africaine | In French | → International relations |
| OUG | Ordonanţă de Urgenţă a Guvernului | In Romanian | → Public administration, government |
| OUNID | Organizo de la Unuiĝintaj Nacioj por Industria Disvolvado (www.unido.org) = UNIDO | United Nations Industrial Development Organization | In English |
In Esperanto | → International relations → Industry, industrial policy → United Nations |
| OUP | Oxford University Press | In English | → Higher education, universities → Graphic industries, printing, publishing |
| ÖVI | Österreichischer Verband der Immobilientreuhänder | In German | → Organizations and associations → Accommodation |
| OWP | Organizacja Wyzwolenia Palestyny = 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 = OLP | Organisation de Libération de la Palestine | In French = 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 = 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 Polish | → Political parties and movements |
| OZN | Organizacija Združenih Narodov = OSN, UN, ONU, ААН, VN, OOH, ABU, ПНО, FN, NBE, CN, KU, ΟΗΕ, ООН, ONZ, BMT, LHiQ, OKB, УН, UM, ST, HN, PBB, NA, ÜRO, SÞ (look above) |
In Slovenian | → International relations → United Nations |
| ÖZS | Österreichische Zeitschrift für Soziologie | In German | → Sociology |
| OВП | Організація визволення Палестини = OWP, PLO, FAT, ООП, OAP, OOP, OLP, PAE, ПЛО, PIO, პგო, FKÖ (look above) |
In Ukrainian | → Political parties and movements |
| P&C | Procurement and Contracts | In English | → 3474 |
| P&E | Pricing and Estimating | In English | → Prices |
| P&SM | Procurement and Subcontract Management | In English | → 3474 |
| PA | Présence Africaine | In French | → Serial publications, periodicals → Politics |
| PAAF | Property Appraisers Association of Florida (www.paaf.net) | In English | → Associations → 332 |
| PACS | PActe Civil de Solidarité | In French | → Law, jurisprudence |
| PAE | Palestinaren Askapenerako Erakundea = OWP, PLO, FAT, ООП, OAP, OOP, OLP, ПЛО, PIO, პგო, OВП, FKÖ (look above) |
In Basque | → Political parties and movements |
| PAE | Projet d'Action Éducative | In French | → Education |
| PAF | Peak Annual Funding | In English | → Economics |
| PAFB | Patrick Air Force Base | In English | → 358 → Aeronautics, aircraft |
| PAFTAD | Pacific Trade and Development | In English | → Trade |
| PAHO | Pan American Health Organization (www.paho.org) = OPS | Organización Panamericana de la Salud | In Spanish = OPAS | Organização Pan-Americana da Saúde | In Portuguese |
In English | → Organizations and associations → International relations → Medicine |
| PAI | Public Authority for Industry | In English | → Standardization → Public administration, government |
| PAIiIZ | Polska Agencja Informacji i Inwestycji Zagranicznych | In Polish | → Finance |
| PAIO | Permanence d'Accueil, d'Information et d'Orientation | In French | → Education → Labour, labour economics |
| PAIZ | Państwowej Agencji Inwestycji Zagranicznych | In Polish | → Finance |
| PALH | Physician Assistant for Latino Health | In English | → Organizations and associations → Medicine → International relations |
| 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 | Programma Alimentare Mondiale = PMA, WFP (look above) |
In Italian | → United Nations → 6123 → Agricultural sciences |
| PAP | Personnel Assurance Program | In English | → Labour, labour economics → Insurance |
| PAP-ND | Projet d'Action Personnalisée – Nouveau Départ | In French | → Labour, labour economics |
| PAR | Population Adjusted Relative (Risk Calculation) | In English | → Demography |
| 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 |
| PARLACEN | Parlamento Centroamericano (www.parlacen.org.gt) | In Spanish | → International relations → Parliaments, representation |
| PARTEI | Partei für Arbeit, Rechtsstaat, Tierschutz, Elitenförderung & basisdemokratische Initiative | In German | → Political parties and movements |
| PAS | Parti Islam SeMalaysia | In Malay | → Islam → Political parties and movements |
| PAS | Prêt à l'Accession Sociale | In French | → Finance → Accommodation |
| PASTEL | Plateforme d’Assistance Technique Européenne en Lorraine | In French | → Research policy → Regional administration |
| PBB | Pertubuhan Bangsa-bangsa Bersatu = OSN, UN, ONU, ААН, VN, OOH, ABU, ПНО, FN, NBE, CN, KU, ΟΗΕ, ООН, ONZ, BMT, LHiQ, OKB, OZN, УН, UM, ST, HN, NA, ÜRO, SÞ (look above) |
In Malay | → International relations → United Nations |
| PBC | The People's Bank of China | In English | → Banks |
| PBDAC | Principal Bank for Development and Agricultural Credit | In English | → Banks → Development → Agricultural sciences |
| PBG | Produadur Broadel Gros | In Breton | → Economics |
| PCC | Parti Communiste Chinois | In French | → Political parties and movements |
| PCCN | Provisioning Contract Control Number | In English | → 3474 |
| PCCP | Preliminary Contract Change Proposal | In English | → 3474 |
| 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 |
| PCL | Permanente Commissie voor Leerlingenzorg | In Dutch | → Organizations and associations → Education |
| 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 |
| PCO | Principal Contracting Officer | In English | → 3474 |
| PCO | Procuring Contracting Office(r) | In English | → 3474 |
| PCO | Partido Comunista de España | In Spanish | → Political parties and movements |
| PCOF | Parti Communiste des Ouvriers de France | In French | → Political parties and movements |
| PCP | Partido Comunista Português | In Portuguese | → Political parties and movements |
| PCP | Politique Commune de la Pêche | In French | → European Union → Fishing, hunting |
| PCP | Project Cost Plan | In English | → Management → Prices |
| PCRDT | Programme Cadre de Recherche et Développement Technologique | In French | → International relations → Mathematics and natural sciences → Engineering, technology |
| PCRS | Performance and Cost Report System | In English | → Prices |
| PCSI | Projet de Coopération Scientifique Inter-universitaire | In French | → Research policy → Higher education, universities |
| PCT | Patent Cooperative Treaty | In English | → Industrial property |
| PCTO | Payload Cost Tradeoff Optimization | In English | → Prices |
| PCUS | Partito Comunista dell'Unione Sovietica = PCUS | Parti Communiste de l'Union Soviétique | In French = 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 = KPSU | Komunisma Partio de Soveta Unio | In Esperanto |
In Italian | → Political parties and movements |
| PCUS | Parti Communiste de l'Union Soviétique = SKUS, KPdSU, KПCC, KSSR, KPSU (look above) |
In French | → Political parties and movements |
| PDE | Partit Demòcrata Europeu | In Catalan | → Political parties and movements |
| PDES | Product Data Exchange Specification/Standard | In English | → Standardization → Trade |
| PDG | Produadur Diabarzh Gros | In Breton | → Economics |
| PDK | Produadur Diabarzh Kriz | In Breton | → Economics |
| PDO | Private Development Organization | In English | → Organizations and associations → Development |
| PDS | Parti Démocratique Sénégalais | In French | → Political parties and movements |
| PDUIF | Plan de Déplacements Urbains d'Ile-de-France | In French | → Public administration, government → Transport and postal services |
| PDV | Porez na dodatu vrijednost = TVA | Taxe sur la Valeur Ajoutée | In French = BTW | Belasting op Toegevoegde Waarde | In Afrikaans = IVA | Impost sobre el valor afegit | In Catalan = ДДС | Данъкът върху добавената стойност | In Bulgarian = VAT | Value Added Tax | In English = AVI | Aldonvalora imposto | In Esperanto = ΦΠΑ | Φόρος Προστιθέμενης Αξίας | In Greek = DPH | Daň z přidané hodnoty | In Czech = Moms | Meromsætningsafgift | In Danish = IVA | Impuesto al Valor Agregado | In Spanish = MwSt | Mehrwertsteuer | In German = BTW | Belasting over de Toegevoegde Waarde | In Dutch = MVA | Merverdiavgift | In Norwegian = PVM | Pridėtinės vertės mokestis | In Lithuanian = IVA | Imposta sul Valore Aggiunto | In Italian = VASK | Virðisaukaskattur | In Icelandic = PPN | Pajak Pertambahan Nilai | In Indonesian = Áfa | Általános forgalmi adó | In Hungarian = PDV | Porez na dodanu vrijednost | In Croatian = ALV | Arvonlisävero | In Finnish = מע"מ | מס ערך מוסף | In Hebrew = KDV | Katma Değer Vergisi | In Turkish = VAT | ภาษีมูลค่าเพิ่ม | In Thai = VAT | மதிப்புக் கூட்டு வரி | In Tamil = DPH | Daň z pridanej hodnoty | In Slovak = НДС | Налог на добавленную стоимость | In Russian = TVA | Taxa pe valoarea adăugată | In Romanian = IVA | Imposto sobre o Valor Acrescentado | In Portuguese = VAT | 增值税 | In Chinese |
In Bosnian | → Taxes, duties |
| PDV | Porez na dodanu vrijednost = TVA, BTW, IVA, ДДС, VAT, AVI, ΦΠΑ, DPH, Moms, MwSt, MVA, PVM, VASK, PPN, Áfa, ALV, מע"מ, KDV, НДС (look above) |
In Croatian | → Taxes, duties |
| PE | Parlament Europejski (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 = PE | Parlement Européen | In French = 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 = EP | Europees Parlement | In Dutch |
In Polish | → Parliaments, representation → European Union |
| PE | Parlamento Europeu (www.europarl.europa.eu) = EP, ΕΚ, ЕП, AP (look above) |
In Portuguese | → Parliaments, representation → European Union |
| PE | Parlement Européen (www.europarl.europa.eu) = EP, ΕΚ, ЕП, AP (look above) |
In French | → Parliaments, representation → European Union |
| PE | Parlament Europeu (www.europarl.europa.eu) = EP, ΕΚ, ЕП, AP (look above) |
In Catalan | → Parliaments, representation → European Union |
| PE | Parlamentul European (www.europarl.europa.eu) = EP, ΕΚ, ЕП, AP (look above) |
In Romanian | → Parliaments, representation → European Union |
| PE | Parlamento Europeo (www.europarl.europa.eu) = EP, ΕΚ, ЕП, AP (look above) |
In Italian | → Parliaments, representation → European Union |
| PE | Parlamento Europeo (www.europarl.europa.eu) = EP, ΕΚ, ЕП, AP (look above) |
In Spanish | → Parliaments, representation → European Union |
| PEB | Plan d'Exposition au Bruit | In French | → Politics |
| PEB | Pacific Economic Bulletin | In English | → Serial publications, periodicals → Economics |
| PECC | Pacific Economic Cooperation Council | In English | → International relations → Economics |
| PEF | Pôle Entrepreneuriat Féminin | In French | → Economics |
| PEF | Pôle (interdisciplinaire) d'Études Françaises | In French | → Higher education, universities → Language, linguistics, literature |
| 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 |
| PEIA | Prosopography of Early Islamic Administration | In English | → Islam → Public administration, government |
| PEK | Perfektiga Esperanto-Kurso | In Esperanto | → Education → Artificial languages (linguistics) |
| PELS | Projet d'Économie Locale et Sociale | In French | → Economics → Social welfare |
| PEO | Private Education Organization | In English | → Education |
| PÉPINES | Promotion des estriennes pour initier une nouvelle équité sociale | In French | → Feminism |
| PES | Partia Europejskich Socjalistów = PES | Party of European Socialists | In English = PSE | Parti Socialiste Européen | In French = ESP | Europeiska socialdemokratiska partiet | In Swedish = PSE | Partito del Socialismo Europeo | In Italian |
In Polish | → Political parties and movements |
| PES | Public Employment Service | In English | → Labour, labour economics → Public administration, government |
| PES | Party of European Socialists = PSE, ESP (look above) |
In English | → Political parties and movements |
| PESC | Politica Estera e di Sicurezza Comune = CFSP | Common Foreign and Security Policy | In English = GASP | Gemeinsame Außen- und Sicherheitspolitik | In German = WPZiB | Wspólna polityka zagraniczna i bezpieczeństwa | In Polish = PESC | Politique Étrangère et de Sécurité Commune | In French = GBVB | Gemeenschappelijk Buitenlands en Veiligheidsbeleid | In Dutch = 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 Italian | → European Union → International relations → Police |
| PESC | Política Externa e de Segurança Comum = CFSP, GASP, WPZiB, GBVB, SZPB, СЗБП, FUSP (look above) |
In Portuguese | → European Union → International relations → Police |
| PESC | Politique Étrangère et de Sécurité Commune = CFSP, GASP, WPZiB, GBVB, SZPB, СЗБП, FUSP (look above) |
In French | → European Union → International relations → Police |
| PESD | Politique Européenne de Sécurité et de Défense | In French | → 355 → European Union |
| PEV | Parti Évangélique (www.evppev.ch) = EVP | Evangelische Volkspartei | In German |
In French | → Political parties and movements → Christianity |
| PFIL | Plate-Forme d'Initiative Locale | In English | → Organizations and associations → Economics |
| PFIL | Plate-Forme d'Initiative Locale | In French | → Organizations and associations → Economics |
| PFJ | Parlement Francophone des Jeunes | In French | → Parliaments, representation |
| PGPUE | Plan General de Promoción del Uso del Euskera | In English | → Public administration, government → Language, linguistics, literature |
| PGUE | Presupuesto General de la Unión Europea | In Spanish | → International relations |
| PhD | Philosophical Doctor = PhD | Philosophiae Doctor | In Latin |
In English | → Higher education, universities |
| PhD | Philosophiae Doctor = (look above) |
In Latin | → Higher education, universities |
| PHMSA | Pipeline and Hazardous Materials Safety Administration (www.phmsa.dot.gov) | In English | → Central administration |
| PI | Pedologisch Instituut | In Dutch | → Education |
| PI | Proprietà Industriale | In Italian | → Industrial property |
| PI&A | Personnel Identification and Authentication | In English | → 00495 → Labour, labour economics |
| PIB | Producte Interior Brut = MEP | Malneta Enlanda Produkto | In Esperanto = GDP | Gross Domestic Product | In English = BKT | Bruttokansantuote | In Finnish = PIL | Prodotto Interno Lordo | In Italian = BNO | Bruto Nationoal Product | VLS |
In Catalan | → Economics |
| 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 |
| PICAI | Patronato Italo Canadese per l’Assistenza agli Immigrati | In Italian | → Organizations and associations → Migrations |
| PICUM | Platform for International Cooperation on Undocumented Migrants | In English | → Migrations → Sociology |
| PICW | The President's Interagency Council on Women | In English | → Organizations and associations → Feminism |
| PIDE | Personnes Inscrites comme Demandeurs d’Emploi | In French | → Labour, labour economics |
| PIDPI | Pacific Islands Development Program | In English | → Politics |
| PIDS | Philippine Institute for Development Studies | In English | → Politics |
| PIIA | Pakistan Institute of International Affairs | In English | → International relations |
| PIL | Prodotto Interno Lordo = PIB, MEP, GDP, BKT, BNO (look above) |
In Italian | → Economics |
| PIMEC | Petita i Mitjana Empresa de Cataluña | In Spanish | → Organizations and associations → 33846 |
| PIN | Personal Identification Number | In English | → Personnel management → Labour, labour economics |
| PIO | Palestinos išsivadavimo organizacija = OWP, PLO, FAT, ООП, OAP, OOP, OLP, PAE, ПЛО, პგო, OВП, FKÖ (look above) |
In Lithuanian | → Political parties and movements |
| PIP | Personnel Incentive Program | In English | → Labour, labour economics → Personnel management |
| PIPA | Investment Promotion Authority | In English | → 33972 |
| PIPSA | Pacific Islands Political Studies Association | In English | → Associations → Politics |
| PIPSS | (The Journal of) Power Institutions in Post-Soviet Societies | In English | → Serial publications, periodicals → Politics |
| PIREF | Programme Incitatif de Recherche sur l'Éducation et la Formation | In French | → Education |
| PJ | Police Judiciaire | In French | → Police |
| PJS | Policejní a justiční spolupráce | In Czech | → European Union |
| PKM | Partit Komunista Malti | In Maltese | → Political parties and movements |
| PL | Partit Laburista = MLP | Malta Labour Party | In English |
In Maltese | → Political parties and movements |
| PLA | Palestina Liberiga Armeo | In Esperanto | → 355 |
| PLA-I | Prêt Locatif Aidé d'Intégration | In French | → Finance → Accommodation |
| PLF | Projet de Loi de Finances | In French | → Politics → Economics |
| PLI | Pays de la Loire Innovation | In French | → Regional administration → Engineering, technology → Research policy |
| PLO | Patronage Laïque d'Octeville | In French | → Organizations and associations → Education |
| PLO | 巴勒斯坦解放組織 = OWP, FAT, ООП, OAP, OOP, OLP, PAE, ПЛО, PIO, პგო, OВП, FKÖ (look above) |
In Chinese | → Political parties and movements |
| PLO | パレスチナ解放機構 = OWP, FAT, ООП, OAP, OOP, OLP, PAE, ПЛО, PIO, პგო, OВП, FKÖ (look above) |
In Japanese | → Political parties and movements |
| PLO | 팔레스타인 해방기구 = OWP, FAT, ООП, OAP, OOP, OLP, PAE, ПЛО, PIO, პგო, OВП, FKÖ (look above) |
In Korean | → Political parties and movements |
| PLO | Palestine Liberation Organization = OWP, FAT, ООП, OAP, OOP, OLP, PAE, ПЛО, PIO, პგო, OВП, FKÖ (look above) |
In English | → Political parties and movements |
| 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 |
| PMA | Programa Mundial de Alimentos = PAM, WFP (look above) |
In Spanish | → United Nations → 6123 → Agricultural sciences |
| PMA | Programa Mundial d'Alimentos = PAM, WFP (look above) |
In Asturian | → United Nations → 6123 → Agricultural sciences |
| PME | Petites et Moyennes Entreprises | In French | → 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 | Parent, McLaughlin and Nangle (www.pmn.com) | In English | → Economics → 6592 |
| PMN | Parti Mahasiswa Negara | In Malay | → Political parties and movements |
| PMU | Paracelsus Medizinische Privatuniversität | In German | → Higher education, universities → Medicine |
| PN | Police Nationale | In French | → Police |
| PN | Partit Nazzjonalista | In Maltese | → Political parties and movements |
| PNB | Parti Nationaliste Basque (www.eaj-pnb.eu) | In French | → Political parties and movements |
| PNB | Produit National Brut | In French | → Economics |
| PNC | Parti de la Nation Corse | In French | → Political parties and movements |
| PNC | Partitu di a Nazione Corsu | In Corsican | → Political parties and movements |
| PNK | Personalnebenkosten | In German | → Labour, labour economics → Accounting |
| PNM | Persemakmuran Negara-Negara Merdeka = CIS | Commonwealth of Independent States | In English |
In Indonesian | → International relations |
| PNO | Parti Nationaliste Occitan | In French | → Political parties and movements |
| PNO | Partit de la Nacion Occitana | In Occitan | → Political parties and movements |
| PNR | Partido Nacional Renovador | In Portuguese | → Political parties and movements |
| PNUAH | Programa de les Naciones Uníes pa los Asentamientos Humanos | In Asturian | → International relations → United Nations |
| PNUD | Programa de les Naciones Uníes pa'l Desendolcu = PNUD | Programme des Nations Unies pour le Développement | In French = PNUD | Programul Naţiunilor Unite pentru Dezvoltare | In Romanian = PUND | Programo de la Unuiĝintaj Nacioj pri Disvolvado | In Esperanto = UNDP | United Nations Development Programme | In English = PNUD | Programa de las Naciones Unidas para el Desarrollo | In Spanish = PNUD | Programa de les Nacions Unides per al Desenvolupament | In Catalan = UNDP | გაეროს განვითარების პროგრამა | In Georgian = UNDP | জাতিসংঘ উন্নয়ন কর্মসূচী | In Bengali = PNUD | Programa das Nações Unidas para o Desenvolvimento | In Portuguese = ПРООН | Программа развития ООН | In Russian = UNDP | สำนักงานโครงการพัฒนาแห่งสหประชาชาติ | In Thai = UNDP | ஐக்கிய நாடுகள் வளர்ச்சித் திட்டம் | In Tamil = UNDP | 联合国开发计划署 | In Chinese |
In Asturian | → International relations → Development → United Nations |
| PNUD | Programa de las Naciones Unidas para el Desarrollo = PUND, UNDP, ПРООН (look above) |
In Spanish | → International relations → Development → United Nations |
| PNUD | Programa de les Nacions Unides per al Desenvolupament = PUND, UNDP, ПРООН (look above) |
In Catalan | → International relations → Development → United Nations |
| PNUD | Programa das Nações Unidas para o Desenvolvimento = PUND, UNDP, ПРООН (look above) |
In Portuguese | → International relations → Development → United Nations |
| PNUD | Programul Naţiunilor Unite pentru Dezvoltare = PUND, UNDP, ПРООН (look above) |
In Romanian | → International relations → Development → United Nations |
| PNUD | Programme des Nations Unies pour le Développement = PUND, UNDP, ПРООН (look above) |
In French | → International relations → Development → United Nations |
| PNUE | Programme des Nations Unies pour l'Environnement | In French | → United Nations |
| PNUFID | Programa de les Naciones Uníes pa la Fiscalización Internacional de Drogues | In Asturian | → International relations → United Nations |
| PNUMA | Programa de les Naciones Uníes pa 'l Mediu Ambiente | In Asturian | → International relations → United Nations |
| PNV | Partido Nacionalista Vasco (www.eaj-pnv.eu) = EAJ | Euzko Alderdi Jeltzalea | In Basque |
In Spanish | → Political parties and movements |