| APHNEP | Assocation de Pharmacie Hospitalière de la région Nord Et Pas-de-Calais | In French | → Organizations and associations → Pharmacology, toxicology |
| APHO | Association de Pharmacie Hospitalière de l'Ouest | In French | → Associations → Pharmacology, toxicology |
| APHO | Association de la Pharmacie Hospitalière de l'Ouest | In French | → Associations → Pharmacology, toxicology |
| APHOSA | Association de Pharmacie Hospitalière de l'Oise Somme Aisne | In French | → Associations → Pharmacology, toxicology |
| API | Alphabet Phonétique International = AFI | Alfabetul Fonetic Internaţional | In Romanian = LFE | Lizherenneg Fonetikel Etrebroadel | In Breton = МФА | Международната фонетична азбука | In Bulgarian = IPA | Internationales Phonetisches Alphabet | ALS = AFI | Alfabet fonètic internacional | In Catalan = IFA | Internacia Fonetika Alfabeto | In Esperanto = IPA | International Phonetic Alphabet | In English = ΔΦΑ | Διεθνές Φωνητικό Αλφάβητο | In Greek = IPA | Internationales Phonetisches Alphabet | In German = AFI | Alfabeto Fonético Internacional | In Spanish = AFI | Alfabeto Fonético Internacional | In Galician = NAF | Nazioarteko Alfabeto Fonetikoa | In Basque = IPA | Internationalt Phonetescht Alphabet | In Letzeburgesh = AFI | Alfabeto Fonetico Internazionale | In Italian = МФА | Международный фонетический алфавит | In Russian = AFI | Alfabeto Fonético Internacional | In Portuguese = AFI | Alfabet fonetic internacionau | In Occitan = AFE | Alfabet Fonetike Eternåcionå | In Walloon = IFA | Internationoal Fonetisch Alfabet | VLS = AFN | Alfabeti Fonetik Ndërkombëtar | SQ |
In French | → Writing systems |
| API | Allocation de Parent Isolé | In French | → Social welfare |
| API | Autorisation(s) de Programme Individualisée(s) | In French | |
| API | Agence de Promotion de l'Industrie | In French | → Organizations and associations → Industry, industrial policy |
| API | Association des Producteurs Indépendants | In French | → Associations → Cinema, movies |
| API | Année Polaire Internationale | In French | → Earth sciences |
| API-PL | Association pour la Promotion d'Internet pour les Professions Libérales | In French | → Associations → Networks, communication → Telecommunications |
| APICS | Analyse et Problèmes Inverses pour le Contrôle et le Signal | In French | → Mathematics → Electronics → Telecommunications |
| APIL | Association des Professionnels des Industries de la Langue (www.apil.asso.fr) | In French | → Associations → Linguistics |
| APIM | Agence pour la Promotion Internationale de la Métropole lilloise | In French | → Municipal administration → International relations → International economic cooperation |
| APINC | Association Pour la Promotion et la défense de l'Internet Non Commercial | In French | → Internet → Associations |
| APIP | Agence de Promotion des Investissements Privés | In French | → 33972 |
| APIQ | Association des Professeurs d’Italien du Québec (http://apiq.enry.net) | In French | → Associations → Education → Language, linguistics, literature |
| APJ | Agent de Police Judiciaire | In French | → Police |
| APJE | Allocation Pour Jeune Enfant | In French | → Social welfare |
| APL | Aide Personnalisée au Logement | In French | → 305 |
| APL | Association des Professions Libérales | In French | → Associations |
| APOEL | Association pour la Préfiguration de l'Observatoire de l'Économie du Livre | In French | → Associations → Graphic industries, printing, publishing |
| APOM | Association des Producteurs d'Oeuvres Multimédia (www.apom.org) | In French | → Associations → Software → Arts |
| APP | Atelier de Pédagogie Personalisé(e) | In French | → Education |
| APP | Agence de Protection des Programmes (http://app.legalis.net) | In French | → Software → Industrial property |
| APP | Atelier Pédagogique Personnalisé | In French | → Education |
| APP | Autorisation de Programme Prévisionnelle | In French | |
| APPEL | Association Pour la Promotion et l'Extension de la Lecture | In French | → Organizations and associations → Education |
| APPMA | Association de Pêche et de Protection des Milieux Aquatiques | In French | → Associations → Nature → Fishing, hunting |
| APPO | Assemblée Populaire des Peuples d'Oaxaca | In French | → Politics |
| APRHOC | Association des pharmaciens PRaticiens des HÔpitaux du Centre | In French | → Associations → Pharmacology, toxicology |
| APRODI | Association pour la Promotion et le Développement Industriel | In French | → Organizations and associations |
| APROGED | Association des PROfessionnels de la Gestion Électronique de l'information et des Documents pour l'entreprise | In French | → Libraries → Organizations and associations → Knowledge management |
| APRONET | Association des Professionnels Internet et Webmestres Territoriaux | In French | → Internet → Associations |
| APRP | Aides de Proximité Réseaux Pédagogiques | In French | → Education |
| APRP | Accident de Perte de Réfrigérant Primaire | In French | → Nuclear technology |
| APS | Avant-projet sommaire | In French | |
| APS | Alimentation par le sol | In French | |
| APS | Activités Physiques et Sportives | In French | → Sport, physical exercises |
| APSA | Avant-projet sommaire d'agglomération | In French | → Regional planning |
| APSI | Avant-projet sommaire d'itinéraire | In French | → Regional planning |
| APSTE | Annuaire pour la Promotion de la Sécurité au Travail et Environnement | In French | → Medicine → Labour, labour economics |
| APT | Aide au Partenariat Technologique | In French | → Industry, industrial policy → Engineering, technology → 650115 |
| APTE | Association Poste Télécom Espéranto | In French | → Associations → Telecommunications → Transport and postal services |
| APTEN | Association pour la Promotion des Transactions Électroniques en Normandie | In French | → Organizations and associations → Telecommunications → Trade |
| APTES | Association du Pôle Transactions Électroniques Sécurisées | In French | → Associations → Networks, communication → Telecommunications |
| APTI | Association pour les Professionnels de la Télévision sur Internet | In French | |
| APTV | Assemblée de Pays Tarentaise-Vanoise | In French | → Politics → Regional planning |
| APUR | Atelier Parisien d'Urbanisme | In French | |
| APV | Alliance Pierres Vivantes | In French | → Modern spiritual movements |
| APV | Atelier Presse Vidéo | In French | → Newspapers, journalism → Cinema, movies |
| APV | Affectations Prioritaires à Valoriser | In French | → Labour, labour economics → Education |
| APVF | Association des Petites Villes de France | In French | → Associations → Municipal administration |
| AQ | Assurance Qualité | In French | → Quality management |
| AQA | Agence pour la Qualité de l'Air | In French | → Nature → Environmental technology, water supply, waste management |
| AQC | Agence Qualité Construction (www.qualiteconstruction.com) | In French | → Quality management → Building |
| AQDM | Association Québécoise de la Dégénérescence Maculaire | In French | → Associations → Ophtalmology |
| AQHSST | Association Québécoise pour l'Hygiène, la Santé et la Sécurité du Travail | In French | → Associations → Labour, labour economics → Medicine |
| AQP | Association Qualité Pesage (www.aqp.asso.fr) | In French | → Associations → Transport and postal services |
| AQP | Association Québecoise du Propane (www.propanequebec.com) | In French | → Associations → Vehicle engineering |
| AQP | Aquaporine | In French | → Specialized or (poly)technical colleges |
| AR | Alliance Royale | In French | → Political parties and movements |
| ARACT | Association Régionale pour l'Amélioration des Conditions de Travail | In French | → Organizations and associations → Labour, labour economics |
| ARAMIS | Agencement en Rames à Modules Indépendants | In French | → Transport and postal services |
| ARAMM | Agence Rhône-Alpes pour la Maîtrise des Matériaux | In French | → 620 |
| ARAPEJ | Association Réfléxion, Action, Prison et Justice | In French | → Associations → Politics |
| ARATEM | Agence Rhône-Alpes pour la Maîtrise des Technologies de Mesure | In French | → Organizations and associations → Standardization |
| ARC | Association pour la Recherche sur le Cancer | In French | → Associations → Oncology |
| ARC | Association des Résistants des Côtes du Nord | In French | → Associations → History |
| ARCE | Aide Régionale à la Création et au développement des petites Entreprises | In French | → Economics |
| ARCEP | Autorité de Régulation des Communications Électroniques et des Postes | In French | → Public administration, government → Telecommunications → Graphic industries, printing, publishing |
| ARCHISIM | Architecture, modélisation de la conduite automobile et simulation de trafic | In French | → Transport and postal services |
| ARCOS | Action de Recherche pour une COnduite Sécurisée | In French | → Vehicle engineering → Transport and postal services |
| ARD | Association pour la Recherche sur le Diabète (www.a-rd.fr) | In French | → Associations → Physiology → Pathology |
| ARDAN | Action Régionale pour le Développement d'Activités Nouvelles | In French | → Economics → Regional administration |
| ARDHJB | Association Royale des Demeures Historiques et Jardins de Belgique | In French | → Associations → History → Horticulture |
| ARDOISE | Application de Recueil de la Documentation Opérationnelle et d'Information Statistique sur les Enquêtes | In French | → Software → Police |
| ARE | Aide au Retour à l'Emploi | In French | → Labour, labour economics |
| ARE | Association pour le Retournement des Entreprises | In French | → Associations → Economics |
| ARENE | Agence Régionale de l'Environnement et des Nouvelles Énergies | In French | → Nature → 6208 |
| ARER | Agence Régionale de l'Énergie de la Réunion | In French | → Energy economics |
| AREV | Alternative Rouge Et Verte | In French | → Political parties and movements |
| ARF | Association des Régions de France | In French | → Associations → Regional administration |
| ARID | Association Régionale pour l'Irrigation et le Drainage = RAID | Regional Association for Irrigation and Drainage | In English |
In French | → Associations → 627 → Agricultural sciences |
| ARIM | Association de Restauration Immobilière | In French | → Building |
| ARIMA | AutoRegressive Integrated Moving Average | In French | → Statistics → Mathematics |
| ARIST | Agence Régionale d'Information Stratégique et Technologique | In French | → Research policy → Libraries → Engineering, technology |
| ARITT | Aide Régionale à l'Innovation et aux Transferts de Technologie | In French | → Engineering, technology |
| ARITT | Aide Régionale à l'Innovation et au Transfert de Technologie | In French | → Engineering, technology |
| ARJ | Association des Radios Juives | In French | → Associations → Telecommunications → Judaism |
| ARL | Association of Research Libraries | In French | → Associations → Libraries → Research policy |
| ARLA | Armée révolutionnaire de libération de l’Azawad | In French | → Political parties and movements → 355 |
| ARMT | Autorité de Régulation des Mesures Techniques | In French | → Computer science → Artistic property |
| ARN | Acide ribonucléique = ARN | Acidum ribonucleinicum | In Latin = RNA | Ribonucleic acid | In English = РНК | Рибонуклеинова киселина | In Russian = ARN | حمض ريبي نووي | In Arabic = TRN | Trenkenn ribonukleek | In Breton = ARN | Àcid ribonucleic | In Catalan = RNK | Ribonukleová kyselina | In Czech = RNA | Ribonuklea acido | In Esperanto = RNS | Ribonukleinsäure | In German = ARN | Azido erribonukleiko | In Basque = ARN | Ácido ribonucleico | In Spanish = RNH | Ribonukleiinhape | In Estonian = RKS | Ríbósakjarnasýru | In Icelandic |
In French | → Genetics → Biochemistry, biophysics |
| ARNm | Acide ribonucléique messager | In French | → Biochemistry, biophysics |
| AROE | Appui Régional Offre Electricité | In French | → 631 |
| AROP | Association pour le Rayonnement de l’Opéra de Paris (www.arop-opera.com) | In French | → Associations → Music → Dance |
| AROP | Association pour le Rayonnement de l'Opéra de Paris | In French | → Music → Dance |
| ARP | Auteurs, Réalisateurs, Producteurs (www.larp.fr) | In French | → Organizations and associations → Cinema, movies |
| ARPE | Agence Régionale Pour l'Environnement | In French | → Nature |
| ARPE | Association française de Résonance Paramagnétique Électronique | In French | → Associations → Nuclear, atomic, and molecular physics |
| ARRCO | Association des Régimes de Retraites Complémentaires | In French | → Organizations and associations → Labour, labour economics → Insurance |
| ARRIFTS | Association du Réseau Régional des Instituts de Formation au Travail Social | In French | → Associations → Social aid → Education |
| ArS | Archives des Sciences | In French | → 50 → Mathematics and natural sciences |
| ARS | Atelier de Recherche en Sociologie | In French | → Sociology |
| ARS | Association Roussillon-Solidarité | In French | → Organizations and associations |
| ARS | Allocation de Rentrée Scolaire | In French | → Social welfare → Education |
| ARSM | Allocation Représentative de Services Ménagers | In French | → Social sciences |
| ART | Agence de Régulation des Télécommunications | In French | → Public administration, government → Telecommunications |
| ARTEB | Agence Rhône-Alpes pour le développement des Technologies médicales et des Biotechnologies | In French | → Biotechnology → Medicine |
| ARTESI | Agence Régionale des Technologies et de la Société de l'Information d'Île-de-France | In French | → Computer science → Engineering, technology → Telecommunications |
| ARTG | Agence Résidentiel Tertiaire Gaz | In French | → Energy economics |
| ARTS | Actions de Recherche pour la Technologie et la Société | In French | → Research policy → Engineering, technology |
| ASA | Association Syndicale Autorisée | In French | → Organizations and associations |
| ASAE | Annales du Service des Antiquités d'Égypte | In French | → Serial publications, periodicals → Archeology → History |
| ASAI | Association Suisse des Architectes d'Intérieur = VSI | Vereinigung Schweizer Innenarchitekten/architektinnen | In German = ASAI | Associazione Svizzera degli Architetti d'Interni | In Italian |
In French | → Associations → Architecture |
| ASAL | Agence Spatiale Algérienne (www.asal-dz.org) | In French | → Astronomy → Spaceflight engineering, astronautics |
| ASC | Association Suisse des Chiropraticiens = SCG | Schweizerischer Chiropraktoren-Gesellschaft | In German |
In French | → Associations |
| ASCO | Association Syndicale Constituée d'Office | In French | → Associations |
| ASCOP | Assemblée Consultative auprès du Congrès des Peuples | In French | → Parliaments, representation |
| ASCOTP | Association pour la Connaissance des Travaux Publics | In French | → Associations → Civil engineering |
| ASCT | Allocation Spéciale de Contrôle Thermique | In French | → Electrical engineering |
| ASE | Académie Syndicale Européenne | In French | → Academies → Labour, labour economics |
| ASE | Aide Sociale à l'Enfance | In French | → Social welfare |
| ASECNA | Agence pour la Sécurité de la Navigation Aérienne en Afrique et à Madagascar | In French | → International relations → Transport and postal services |
| ASEM | Agent Spécialisé des Écoles Maternelles | In French | → Education |
| ASF | Autoroutes du Sud de la France | In French | → Transport and postal services |
| ASFA | Association des Sociétés Françaises d'Autoroutes (www.autoroutes.fr) | In French | → Organizations and associations → Transport and postal services |
| ASFC | Agence des Services Frontaliers du Canada | In French | → Police |
| ASFNE | Allocation Spéciale du Fonds National de l'Emploi | In French | → Labour, labour economics |
| ASFP | Architectes Sans Frontiéres - Portugal = ASFP | Arquitectos Sem Fronteiras Portugal | In Portuguese |
In French | → Organizations and associations → Development → Architecture |
| ASG | Association Suisse des Gérants de fortune = VSV | Verband Schweizerischer Vermögensverwalter | In German |
In French | → Associations |
| ASIDCOM | Association de Sensibilisation, d'Information et de Défense des Consommateurs Musulmans | In French | → Associations → Islam → Consumerism |
| ASIEC | Association Internationale des Étudiants en Sciences Économiques et Commerciales | In French | → Associations → Economics → Trade → Higher education, universities |
| ASIS | (The) American Society for Information Science | In French | → Organizations and associations → Libraries |
| ASJR | Association des Salles de Jeux en Réseau (www.asjr.net) | In French | → Associations → Software → Entertainment |
| ASLIB | (The) Association for Information Management | In French | → Associations → Libraries |
| ASM | Association Suisse des Musiciens (www.asm-stv.ch) | In French | → Associations → Music |
| ASMAC | Association Suisse des Médecins-Assistant(e)s et Chef(fe)s de clinique = VSAO | Verband der Schweizer Assistenz- und Oberärzte/-ärztinnen | In German |
In French | → Associations → Medicine |
| ASMI | Association Suisse des Médecins Indépendents | In French | → Associations → Medicine |
| ASMP | Académie des Sciences Morales et Politiques | In French | → Academies → Social sciences → Politics |
| ASN | Autorité de Sûreté Nucléaire | In French | → Central administration → Nuclear technology |
| ASP | Association Suisse des Psychothérapeutes = SPV | Schweizer Psychotherapeuten Verband | In German |
In French | → Associations → Psychology |
| ASP | Agence Science-Presse | In French | → Newspapers, journalism → Mathematics and natural sciences |
| ASPA | Aide Sociale aux Personnes Agées | In French | → Social welfare |
| ASPAJ | Association Syndicale Professionnelle d'Administrateurs Judiciaires | In French | → Associations → Law, jurisprudence |
| ASPAS | Association pour la Protection des Animaux Sauvages | In French | → Associations → Nature |
| ASPH | Aide Sociale aux Personnes Handicapées | In French | → Social welfare |
| ASPHoG | Association des Pharmaciens Hospitaliers de Guadeloupe | In French | → Associations → Pharmacology, toxicology |
| ASPMCDM | Association Syndicale Professionnelle et Mutuelle de la Critique Dramatique et Musicale | In French | → Organizations and associations → Newspapers, journalism → Literature → Music |
| ASPP | Association des Sociétés Suisses de Publicité = VSW | Verband Schweizerischer Werbegesellschaften | In German = ASSP | Associazione delle Società Svizzere di Pubblicità | In Italian |
In French | → Associations → 6591 |
| ASPP | Association Suisse de Science Politique | In French | → Associations → Politics |
| ASQUER | ASsociation pour la QUalification des Équipements de la Route | In French | → Associations → Transport and postal services |
| ASSB | Annales de la Société Scientifique de Bruxelles | In French | → Serial publications, periodicals → Mathematics and natural sciences |
| ASSEDIC | Association pour l'Emploi dans l'Industrie et le Commerce | In French | → Organizations and associations → Labour, labour economics → Industry, industrial policy → Trade |
| ASSELAF | Association pour la sauvegarde et l'expansion de la langue française | In French | → Associations → Language, linguistics, literature |
| ASSIPHAR | Association Nationale des Asssistants et Anciens Assistants en Pharmacie Hospitalière | In French | → Associations → Pharmacology, toxicology |
| ASSM | Académie Suisse des Sciences Médicales = SAMS | Swiss Academy of Medical Sciences | In English = SAMW | Schweizerische Akademie der medizinischen Wissenschaften | In English |
In French | → Academies → Medicine |
| ASSR | Attestation Scolaire de Sécurité Routière | In French | → Education → Transport and postal services |
| AST | Agent des Services Techniques | In French | → Applied sciences, technology |
| ASTAF | Association Syndicale de Travaux et d'Amélioration Foncière | In French | → Associations → Building |
| ASTB | Association Sclérose Tubéreuse de Bourneville | In French | → Associations → Neurology |
| ASTE | Association pour le Développement des Sciences et Techniques de l'Environnement | In French | → Associations → Nature → Environment, environmental sciences |
| ASU | Administration Scolaire et Universitaire | In French | → Public administration, government → Education |
| AT | Analyse Transactionnelle | In French | → 15998 |
| At2i | Automation Assistance Traçabilité Informatique Industrielle (www.at2i.net) | In French | → Computer science → Mechanical engineering |
| AT2I | Assistance Téléphonie Informatique Internet sur Grenoble (www.groupe-at2i.com) | In French | → Internet → Telecommunications |
| AT2i+ | Auvergne Technologie Innovation Initiative Plus | In French | → Engineering, technology |
| ATAC | Association Technique pour l'Action Culturelle | In French | → Organizations and associations → Civilization, culture, progress |
| ATALA | Association pour le Traitement Automatique des LAngues (www.atala.org) | In French | → Associations → Computer-based techniques → Linguistics |
| ATC | Association Touristique des Cheminots | In French | → Organizations and associations → Tourism |
| ATC | Action Thématique Concertée | In French | → Management |
| ATCD | Antécédents | In French | → Medicine |
| ATCG | Association Technique pour la Certification des Granulats | In French | → Associations → Standardization → Civil engineering → Building |
| ATEC | Association pour le développement des techniques de Transport, d'Environnement et de Circulation | In French | → Organizations and associations → Nature → Vehicle engineering → Transport and postal services |
| ATEL | Aar et Tessin SA d'Électricité | In French | → Organizations and associations → Energy economics → Electrical engineering |
| ATEnEE | Actions Territoriales pour l'Environnement et l'Efficacité Énergétique | In French | → Nature → Energy economics |
| ATER | Attaché Temporaire d'Enseignement et de Recherche | In French | → Research policy → Education |
| ATG | Association Technique du Gaz | In French | → Associations → Energy economics |
| ATGC | Aide Technique à la Gestion Communale | In French | → Public administration, government |
| ATHIS | Atelier International Histoire et Informatique | In French | → History → Computer science |
| ATI | Aide Tourangelle à l'Innovation | In French | → Regional administration → Engineering, technology → Research policy |
| ATI | Affectation Temporaire Indemnisée | In French | → Labour, labour economics |
| ATIC | Association Technique pour l'Importation Charbonnière | In French | → Organizations and associations |
| ATILH | Association Technique de l'Industrie des Liants Hydrauliques | In French | → Associations → Chemicals → Civil engineering → Building |
| ATILLA | Association des Technologies Internet et du Logiciel Libre ou Alternatif | In French | → Associations → Software |
| ATL | Aide Transitoire au Logement | In French | → Accommodation |
| ATMAB | Association Technique Maritime et Aéronautique - Bulletin | In French | → Serial publications, periodicals → 6295 → Aeronautics, aircraft |
| ATMB | (Société des) Autoroutes et du Tunnel du Mont-Blanc | In French | → Transport and postal services |
| ATNC | Agent Transmissible Non Conventionnel | In French | → Biochemistry, biophysics → Infectious diseases |
| ATOP | Association des Théâtres de l'Opéra de Paris | In French | → Associations → Theatre → Dance |
| ATOSS | (Personnel) Administratif, Technique, Ouvrier, de Service et de Santé | In French | → Public administration, government |
| ATP | Adénosine Triphosphate | In French | → Biochemistry, biophysics |
| ATR | Administration Territoriale de la République | In French | → Municipal administration → Regional administration |
| ATS | Accès des Tiers aux Stockages | In French | → Energy economics |
| ATSEM | Agent Territorial Spécialisé des Écoles Maternelles | In French | → Education |
| ATSM | Agent Territorial Spécialisé d'école Maternelle | In French | → Education |
| ATTAC | Association pour la Taxation des Transactions pour l'Aide aux Citoyens (www.attac.org) = ATTAC | Asociación por la Tasación de las Transacciones y por la Ayuda a los Ciudadanos | In Spanish = ATTAC | Associació per la Taxació de les Transaccions i per l'Ajuda als Ciutadans | In Catalan = ATTAC | Associazione per la Tassazione delle Transazioni finanziarie e per l'Aiuto ai Cittadini | In Italian |
In French | → Associations → Development |
| ATU | Autorisation Temporaire d'Utilisation | In French | → Pharmacology, toxicology |
| ATu2L | Association Tunisienne des Logiciels Libres | In French | → Associations → Software |