

| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| ENSI | École Nationale Supérieure d'Ingénieurs | In French | → Specialized or polytechnical colleges → Engineering, technology | 
| ENSI | École Nationale des Sciences de l'Informatique (www.ensi.rnu.tn) | In French | → Specialized or polytechnical colleges → Tunisia | 
| ENSIA | École Nationale Supérieure des Industries Agro-Alimentaires du Cameroun | In French | → Specialized or polytechnical colleges → Agricultural sciences → Food technology | 
| ENSIA | École Nationale Supérieure des Industries Agricoles et Alimentaires | In French | → Specialized or polytechnical colleges → Agricultural sciences → Food technology | 
| ENSIACET | École Nationale Supérieure des Ingénieurs en Arts Chimiques et Technologiques | In French | → Specialized or polytechnical colleges → Engineering, technology → Chemical technology | 
| ENSIAME | École Nationale Supérieure des Ingénieurs en Informatique, Automatique, Mécanique, Énergétique, Électronique | In French | → Specialized or polytechnical colleges → Computer science → Mechanical engineering → Electronics | 
| ENSIAS | École Nationale Supérieure d'Informatique et d'Analyse de Systèmes (www.ensias.ma) | In French | → Specialized or polytechnical colleges → Computer science → Morocco | 
| ENSIC | École Nationale Supérieure des Industries Chimiques de Nancy (www.ensic.inpl-nancy.fr) | In French | → Specialized or polytechnical colleges → Chemical technology → France | 
| ENSICA | École Nationale Supérieure de Constructions Aéronautiques | In French | → Specialized or polytechnical colleges → Aeronautics, aircraft | 
| ENSICA | École Nationale Supérieure d'Ingénieurs de Constructions Aéronautiques | In French | → Specialized or polytechnical colleges → Aeronautics, aircraft | 
| ENSICA | École Nationale Supérieure d'Ingénieurs des Constructions Aéronautiques | In French | → Specialized or polytechnical colleges → Aeronautics, aircraft | 
| ENSICAEN | École Nationale Supérieure d'Ingénieurs de Caen | In French | → Specialized or polytechnical colleges → Engineering, technology | 
| ENSIEC | Enugu State Independent Electoral Commission | In English | → Elections | 
| ENSIETA | École Nationale Supérieure des Ingénieurs des Études et Techniques d'Armement | In French | → Specialized or polytechnical colleges → Military engineering | 
| ENSIL | École Nationale Supérieure d'Ingénieurs de Lomé | In French | → Specialized or polytechnical colleges → Engineering, technology | 
| ENSIP | ENSO Simulation Intercomparison Project | In English | → Meteorology, climatology | 
| ENSISA | École Nationale Supérieure d'Ingénieurs Sud Alsace (www.ensisa.uha.fr) | In French | → Specialized or polytechnical colleges → France | 
| ENSIT | École Nationale des Sciences Informatiques de Tunisie (www.ensi.rnu.tn) | In French | → Specialized or polytechnical colleges → Computer science → Tunisia | 
| ENSITM | École Nationale Supérieure des Industries Textiles de Mulhouse | In French | → Specialized or polytechnical colleges → Textile industry | 
| ENSLL | École Nationale Supérieure Louis Lumière | In French | → Higher education, universities → Engineering, technology → Cinema, movies | 
| ENSMA | École Nationale Supérieure de Mécanique et d'Aérotechnique (www.ensma.fr) | In French | → Specialized or polytechnical colleges → Mechanical engineering → Aeronautics, aircraft → Vehicle engineering → France | 
| ENSMM | École Nationale Supérieure de Mécanique et des Microtechniques | In French | → Specialized or polytechnical colleges → Mechanical engineering | 
| ENSO | École Normale Supérieure de Ouargla | In French | → Specialized or polytechnical colleges | 
| ENSO | El Niño - Southern Oscillation | In English | → Meteorology, climatology | 
| ENSO | École Normale Sociale de l'Ouest (www.enso.fr) | In French | → Education → France | 
| ENSO | Energie Sachsen Ost GmbH (www.enso.de) | In German | → Energy economics → Germany | 
| ENSO | El Niño and Southern Oscilation | In English | → Meteorology, climatology | 
| ENSOSP | École Nationale Supérieure des Officiers de Sapeurs-Pompiers (www.ensosp.com) | In French | → Specialized or polytechnical colleges → Firefighting → France | 
| ENSP | École Nationale de la Santé Publique (www.ensp.fr) | In French | → Specialized or polytechnical colleges → Public health and hygiene → France | 
| ENSP | École Nationale Supérieure de Police | In French | → Specialized or polytechnical colleges → Public administration, government | 
| ENSP | Enquête Nationale sur la Santé de la Population | In French | → Statistics → Medicine | 
| ENSPS | École Nationale Supérieure de Physique de Strasbourg (www-ensps.u-strasbg.fr) | In French | → Specialized or polytechnical colleges → Physics → Engineering, technology | 
| ENSPT | École Nationale Supérieure des Postes et Télécommunications | In French | → Specialized or polytechnical colleges → Postal services → Telecommunications → France | 
| ENSPY | École Nationale Supérieure Polytechnique de Yaoundé | In French | → Specialized or polytechnical colleges → Engineering, technology | 
| ENSS | École Normale Supérieure de Saîda | In French | → Specialized or polytechnical colleges | 
| ENSSAA | École Nationale Supérieure des Aciences Agronomiques Appliquées | In French | → Specialized or polytechnical colleges → Agricultural sciences | 
| ENSSAT | École Nationale Supérieure des Sciences Appliquées et de Technologies | In French | → Specialized or polytechnical colleges → Engineering, technology | 
| ENSSIB | École Nationale Supérieure des Sciences de l'Information et des Bibliothèques | In French | → Libraries → Specialized or polytechnical colleges | 
| ENSSP | École Nationale Supérieure des Sapeurs-Pompiers | In French | → Specialized or polytechnical colleges → Firefighting → France | 
| EnST | Environmental Science Technology | In English | → Serial publications, periodicals → Engineering, technology → Threats to the environment | 
| ENST | École Nationale Supérieure des Télécoms | In French | → Specialized or polytechnical colleges → Telecommunications | 
| ENSTA | École Nationale Supérieure des Techniques Avancées | In French | → Specialized or polytechnical colleges → Engineering, technology | 
| ENSTIB | École Nationale Supérieure des Technologies et Industries du Bois | In French | → Forestry → Paper and board industry | 
| ENSTPE | École Nationale Supérieure des Travaux Publics de Yaoundé | In French | → Specialized or polytechnical colleges → Civil engineering | 
| ENSTPO | École Nationale Supérieure des Travaux Publics de Yamoussoukro | In French | → Specialized or polytechnical colleges → Civil engineering | 
| ENSUT | École Nationale Supérieure de Technologie | In French | → Specialized or polytechnical colleges → Engineering, technology | 
| ENT | Environnement Numérique de Travail | In French | → Software → Human-computer interaction | 
| ENTA | European Nanotechnology Trade Alliance | In English | |
| ENTC | École Nationale de Télécommunications | In French | → Specialized or polytechnical colleges → Telecommunications | 
| ENTO | Employment National Training Organisation | In English | → Organizations and associations → Education → Labour, labour economics | 
| EnTox | Environmental Toxicology | In English | → Serial publications, periodicals → Threats to the environment | 
| ENTPA | École Nationale des Travaux Publics d'Alger (www.entp.edu.dz) | In French | → Specialized or polytechnical colleges → Civil engineering → Algeria | 
| ENTPE | École Nationale des Travaux Publics de l'État | In French | → Specialized or polytechnical colleges → Civil engineering → Construction | 
| ENTPJ | École Nationale de Formation de Techniciens Supérieurs des Travaux Publics de Jijel | In French | → Specialized or polytechnical colleges → Civil engineering | 
| ENTPN | École Nationale des Travaux Publics de N'jamena | In French | → Specialized or polytechnical colleges → Civil engineering | 
| EnTR | Energy Technology Review | In English | → Serial publications, periodicals → Energy economics | 
| ENTS | École Nationale des Techniciens Supérieurs | In French | → Specialized or polytechnical colleges → Engineering, technology | 
| ENTV | Entreprise Nationale de Télévision (www.entv.dz) | In French | → Telecommunications → Algeria | 
| ENUM | Electronic NUmber Mapping | In English | → Networks, communication | 
| ENUM | Electronic Numbering Protocol | In English | → Telecommunications | 
| Env | Environmentrics | In English | → Serial publications, periodicals → Engineering, technology → Threats to the environment | 
| ENV | École Nationale de Voile | In French | → Specialized or polytechnical colleges → Sport, physical exercises | 
| ENVISAT | Environmental Satellite | In English | → Threats to the environment → Astronautics | 
| ENVS | Edge Network Video Servers | In English | → Telecommunications | 
| EO | Evangelische Omroep | In Dutch | → Protestant churches | 
| EO | Entrepreneurs' Organization | In English | → Organizations and associations → Economic policy | 
| EO | Europe Online | In English | |
| EO | Exchange Online | In English | → 659 | 
| EO&B | Ethiek, Onderzoek & Bestuur | In Dutch | → Ethics | 
| EOAAE | Equal-Opportunity Affirmative-Action Employer | In English | → Labour, labour economics | 
| EOAS | Engineering Order Accountability System | In English | |
| EOAST | Earth-Oriented Applications and Space Technology | In English | → Serial publications, periodicals → Earth sciences → Astronautics | 
| EOB | Europees Octrooibureau (www.epo.org) = EPO | European Patent Office | In English = OEP | Oficina Europea de Patentes | In Spanish = OEB | Office Européen des Brevets | In French = IEP | Instituto Europeu de Patentes | In Portuguese = EAP | Europäisches Patentamt | In German | In Dutch | → International economic cooperation → Industrial property | 
| EOB | Équipe Opérationnelle de Base | In French | → Labour, labour economics | 
| EOC | Earth Observation Center | In English | → Earth sciences | 
| EOC | Early Operational Capability | In English | |
| EOC | Edge Of Coverage | In English | |
| EOC | Electro-Optical Center | In English | |
| EOC | End Of Contract | In English | → Contract law | 
| EOC | Engine Order Capability | In English | → Vehicle engineering | 
| EOC | Engine-Out Capability | In English | → Vehicle engineering | 
| EOC | Educational Opportunity Center | In English | → Education | 
| EOCM | Electro-Optical Countermeasure | In English | |
| EOCR | Engineering Order Control Record | In English | → Records management → Engineering, technology | 
| EOD | Explosive Ordnance Disposal | In English | |
| EODB | End Of Data Block | In English | → Data | 
| EODC | Earth Observation Data Centre | In English | → Earth sciences | 
| EODM | EMF Ontology Definition Metamode | In English | → Programming languages → Data → Linguistics | 
| EODRS | Earth Observation Data Retrieval System | In English | → Earth sciences → Astronautics | 
| EOET | Ergonomie, Organisation et Espaces de Travail | In French | → Higher education, universities → Labour, labour economics | 
| EOF | End Of File | In English | → Files | 
| EOF | Empirical Orthogonal Function | In English | → Mathematics | 
| EOG | Europejski Obszar Gospodarczy = EEA | European Economic Area | In English = EEE | Espace Économique Européen | In French = EWR | Europäischer Wirtschaftsraum | In German = ЕИЗ | Европейска икономическа зона | In Bulgarian = EHP | Evropský hospodářský prostor | In Czech = EØS | Europæisk Økonomisk Samarbejdsområde | In Danish = EEA | Eŭropa Ekonomia Areo | In Esperanto = ΕΟΖ | Ευρωπαϊκή Οικονομική Ζώνη | In Greek = EES | Evrópska efnahagssvæðið | In Icelandic = SEE | Spazio Economico Europeo | In Italian = EES | Europeiska Ekonomiska Samarbetsområdet | In Swedish = EWR | Europäesche Wirtschaftsraum | In Letzeburgesh = EGT | Európai Gazdasági Térség | In Hungarian = EER | Europese Economische Ruimte | In Dutch = EEA | 欧州経済領域 | In Japanese = EØS | Det europeiske økonomiske samarbeidsområde | In Norwegian = EØS | Det Europeiske Økonomiske Samarbeidsområdet | In Nynorsk = EEE | Espaço Económico Europeu | In Portuguese = ЕЭЗ | Европейская экономическая зона | In Russian = EHP | Európsky hospodársky priestor | In Slovak = ЕЕП | Европски економски простор | In Serbian = ETA | Euroopan talousalue | In Finnish | In Polish | → Economics → European Union | 
| EOG | Electroculogram | In English | → Diagnostics | 
| EOGN | École des Officiers de la Gendarmerie Nationale | In French | → Specialized or polytechnical colleges → Police | 
| EOHH | Équipe Opérationnelle d'Hygiène Hospitalière | In French | → Medicine | 
| EOHT | External Oxygen and Hydrogen Tank | In English | → Astronautics | 
| EOI | Earth Orbit Insertion | In English | → Astronautics | 
| EOL | Earth Orbit Launch | In English | → Astronautics | 
| EOL | End Of Line | In English | → Computer science | 
| EoLA | Esperanto - Lingvo Arta | In Esperanto | → Arts → Artificial languages (linguistics) | 
| ÉOLE | Expression, Ouverture, Libération des Épileptiques | In French | → Organizations and associations → Neurology | 
| EOM | Earth Orbital Mission | In English | → Astronautics | 
| EOM | Engineering Operations Manual | In English | → Engineering, technology | 
| EOM | Equation Of Motion | In English | → Physics → Mechanical engineering | 
| EONIA | Euro OverNight Index Average | In English | → Finance | 
| EONS | European Oncology Nursing Society | In English | → Organizations and associations → Oncology | 
| EONS | Enhanced Operator Name String | In English | → Telecommunications | 
| EOO | European OpenID Organization | In English | → Organizations and associations | 
| EOO | École d'Ostéopathie de l'ONREK | In French | → Specialized or polytechnical colleges → Medicine | 
| EOP | Earth and Ocean Physics | In English | → Geophysics → Marine research, oceanography | 
| EOP | Emergency Oxygen Pack | In English | |
| EOP | Educational Opportunity Program | In English | → Education | 
| EOPAP | Earth and Ocean Physics Application Program | In English | → Geophysics → Marine research, oceanography | 
| EOPF | End of Powered Flight | In English | → Aeronautics, aircraft → Astronautics | 
| EOPR | Engineering Order Purchase Request | In English | → 34745 → Engineering, technology | 
| EOPR | Engineering Order Purchase Requisition | In English | → 34745 → Engineering, technology | 
| EOQ | Economic Order Quantity | In English | |
| EORC | Earth Observation Research Center (www.eorc.jaxa.jp) | In English | → Research institutes → Earth sciences → Astronautics → Japan | 
| EORQ | Engineering Order Request For Quotation | In English | |
| EORSAT | Electronic Ocean Reconstruction Satellite | In English | → Marine research, oceanography → Astronautics | 
| EORTC | European Organisation for Research and Treatment of Cancer | In English | → Organizations and associations → Oncology | 
| EOS | Esperantska Omladina Srbije | In Serbian | → Artificial languages (linguistics) | 
| EOS | Earth Observing System | In English | → Earth sciences | 
| EOS | Egyptian Organization for Standardization and Quality Control (www.eos.org.eg) | In English | → Organizations and associations → Standardization → Quality management → Egypt | 
| EOS | Egyptian Organization for Standardization and Quality (www.eos.org.eg) | In English | → Organizations and associations → Standardization → Quality management → Egypt | 
| EOS | Earth Observation Satellite | In English | → Astronautics | 
| EOS | Earth-Orbit Shuttle | In English | → Astronautics | 
| EOS | Electrophoretic Separation | In English | |
| EOS | Emergency Oxygen System | In English | |
| EOS | Extended Operating System | In English | → Computer science | 
| EOSD | Electro-Optical Systems Design | In English | → Serial publications, periodicals → Electrical engineering | 
| EOSH | Electro-Optical Sensor Hardening | In English | |
| EOSP | Earth Observing Scanning Polarimeter | In English | |
| EOSS | Earth-Orbital Space Station | In English | → Astronautics | 
| EOSS | Extravehicular Activity Operational Slide-Wire System | In English | → Astronautics | 
| EOST | École et Observatoire des Sciences de la Terre (http://eost.u-strasbg.fr) | In French | → Research institutes → Specialized or polytechnical colleges → Earth sciences → France | 
| EOT | End Of Tape | In English | |
| EOT | End Of Transmission | In English | |
| EOTA | European Organisation for Technical Approvals | In English | → Standardization | 
| EOTA | European Organization for Technical Approvals | In English | → Standardization | 
| EOTC | European Organization for Testing and Certification | In English | → Organizations and associations → Standardization | 
| EOTC | European Organisation for Testing and Certification | In English | |
| EOTD | Enhanced Observed Time Difference | In English | → Telecommunications | 
| EOTF | Engineering Order To Follow | In English | |
| EÕTK | Eesti Õigustõlke Keskuse | In Estonian | → Estonia | 
| EOTP | Eléments d'Organigramme Technique de Projet | In French | → Management | 
| EOTS | Electro-Optical Threat Sensor | In English | |
| EOV | Europees Octrooiverdrag = CBE | Convention sur le Brevet Européen | In French = EPC | European Patent Convention | In English = EPU | Europäisches Patentübereinkommen | In German = CPE | Convenio sobre la Patente Europea | In Spanish | In Dutch | → International economic cooperation → Industrial property | 
| EOW | Energy Over Weight | In English | |
| EP | Elbow Pitch | In English | |
| EP | Electrical Power | In English | → Electrical engineering | 
| EP | Experiment Planning | In English | → Research policy | 
| EP | Éclairage Public | In French | → Electrical engineering | 
| EP | Eŭropa Parlamento (www.europarl.europa.eu) = PE | Parlamento Europeo | In Spanish = 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 = PE | Parlament Europejski | In Polish = EP | Europees Parlement | In Dutch | In Esperanto | → Parliaments, representation → European Union → Europe | 
| EP | European Parliament (www.europarl.europa.eu) = PE, ΕΚ, ЕП, AP (look above) | In English | → Parliaments, representation → European Union → Europe | 
| EP | Europäisches Parlament (www.europarl.europa.eu) = PE, ΕΚ, ЕП, AP (look above) | In German | → Parliaments, representation → European Union → Europe | 
| EP | Evropský parlament (www.europarl.europa.eu) = PE, ΕΚ, ЕП, AP (look above) | In Czech | → Parliaments, representation → European Union → Europe | 
| EP | Europäescht Parlament (www.europarl.europa.eu) = PE, ΕΚ, ЕП, AP (look above) | In Letzeburgesh | → Parliaments, representation → European Union → Europe | 
| EP | Európai Parlament (www.europarl.europa.eu) = PE, ΕΚ, ЕП, AP (look above) | In Hungarian | → Parliaments, representation → European Union → Europe | 
| EP | Európsky parlament (www.europarl.europa.eu) = PE, ΕΚ, ЕП, AP (look above) | In Slovak | → Parliaments, representation → European Union → Europe | 
| EP | Europees Parlement (www.europarl.europa.eu) = PE, ΕΚ, ЕП, AP (look above) | In Dutch | → Parliaments, representation → European Union → Europe | 
| EP | Engin-Pompe | In French | → Firefighting | 
| EP&S | Earth, Planets, and Space | In English | → Serial publications, periodicals → Solar system | 
| EPA | EnergiePrestatieAdvies | In Dutch | → Energy economics | 
| EPA | Engineering Personnel Authorization | In English | → Engineering, technology | 
| EPA | Engineering Project Authorization | In English | → Engineering, technology | 
| EPA | Environmental Protection Agency | In English | → Public administration, government → Environmental protection → Threats to the environment | 
| EPA | Estimated Plan Of Action | In English | → Management | 
| EPA | Établissement Public à caractère Administratif | In French | → Public administration, government | 
| EPA | Esperanto-Propaganda Asocio de Oomoto | In Esperanto | → Associations → Artificial languages (linguistics) | 
| EPA | Établissement Public d'Aménagement | In French | → Public administration, government → Regional planning | 
| EPA | Elektronikus Periodika Archívum és Adatbázis | In Hungarian | → Electronics | 
| EPA | Échelle Pivotante Automatique | In French | → Firefighting | 
| EPA | Établissement Public Administratif | In French | → Public administration, government | 
| EPA | Economic Partnership Agreements | In English | → International economic cooperation → European Union | 
| EPAC | Échelle Pivotante Automatique Continue | In French | → Firefighting | 
| EPAD | Établissement Public d'aménagement de La Défense | In French | → Municipal administration → Regional planning | 
| EPAD | Établissement Public d'Aménagement et de Développement Ouest Provence | In French | → Regional planning | 
| EPAIC | European Port Access ID Card | In English | |
| EPAN | European Public Administration Network | In English | → Public administration, government | 
| EPAS | Échelle Pivotante Automatique Séquentielle | In French | → Firefighting | 
| EPBS | Établissement Public de la Basse-Seine | In French | → Public administration, government → Regional planning | 
| EPC | Electronic Parts Control | In English | → Electronics | 
| EPC | Error Protection Code | In English | |
| EPC | External Power Contractor | In English | → Electrical engineering | 
| EPC | Electronic Product Code | In English | → Electronics | 
| EPC | European Patent Convention = EOV, CBE, EPU, CPE (look above) | In English | → International economic cooperation → Industrial property | 
| EPCDC | Electrical Power Conditioning, Distribution, and Control | In English | → Electrical engineering | 
| EPCI | Établissement Public de Coopération Intercommunale | In French | → Public administration, government | 
| EPCI | Établissement Public à Coopération Intercommunale | In French | → Municipal administration | 
| EPCI | Établissement Public Communal et Intercommunal | In French | → Municipal administration | 
| EPCP | État Prévisionnel de la Commande Publique | In French | → Public administration, government | 
| EPCR | Endothelial Protein C Receptor | In English | → Proteins | 
| EPCReN | Eurasia Political Culture Research Network | In English | → Politics | 
| EPCS | Établissement Public de Coopération Scientifique | In French | → Central administration → Mathematics and natural sciences | 
| EPCSCP | Établissement Public à Caractère Scientifique, Culturel et Professionnel | In French | → Central administration → Mathematics and natural sciences → Civilization, culture, progress → Labour, labour economics | 
| EPD | Energetic Particles Detector | In English | → Astronomy | 
| EPD | Electrical Power Distribution | In English | → Electrical engineering | 
| EPD | Emergency Procedures Document | In English |