| ECI | European Copper Institute | In English | → Metallurgy |
| ECK | Elektrociepłownia Kraków | In Polish | |
| ECL | Electronic Circuit Logic | In English | → Computer science → Electronics |
| ECLRv | Electrical Communication Laboratories Review | In English | → Serial publications, periodicals → Telecommunications |
| ECQAC | Electronic Components Quality Assurance Committee | In English | → Organizations and associations → Quality management → Electronics |
| ECS | Electrical Control Station | In English | |
| ECTEL | European Telecommunications and Professional Electronics Industry | In English | → Electronics → Telecommunications |
| ECU | Electrical Control Unit | In English | |
| ECU | Electronic Coupling Unit | In English | → Electronics |
| ECU | Electrical Conversion Unit | In English | |
| ECW | Elektrociepłownie Wybrzeże SA (www.ecwybrzeze.pl) | In Polish | |
| EDA | Electronic Display Assembly | In English | → Human-computer interaction → Electronics |
| EDCS | Electrical Distribution and Control System | In English | |
| EDDL | Electronic Device Description Language | In English | → Computer architecture → Hardware → Electronics |
| EDE | Elementos Decorativos Eléctricos (www.e-d-e.com) | In Spanish | |
| EDENOR | Empresa Distribuidora y Comercializadora Norte (www.edenor.com.ar) | In Spanish | |
| EDF | Électricité de France (www.edf.fr) | In French | → Energy economics |
| EDF-T | Électricité de France-Trading | In French | → Finance |
| EDFI | Électricité de France International | In French | |
| EDM | Énergie du Mali | In French | → Energy economics |
| EDM | Electrical Discharge Machining | In English | |
| EDP | Energias de Portugal | In Portuguese | → Energy economics |
| EDP | Electricidade de Portugal | In Portuguese | |
| EDS | Electrical Distribution System | In English | |
| EE | Electrical Engineering | In English | |
| EEA | Électronique, Électrotechnique, Automatique | In French | → Electronics |
| EECA | European Electronic Component Manufacturers Association | In English | → Associations → Electronics |
| EEE | Electronic, Electrical, and Electromechanical | In English | → Mechanical engineering → Electronics |
| EEEU | End Effector Electronics Unit | In English | → Electronics |
| EEI | Edison Electrical Institute (www.eei.org) | In English | → Organizations and associations |
| EEL | Electrical Equipment List | In English | |
| EEP | Electronic Equipment Package | In English | → Electronics |
| EEPCA | European Electrical Products Certification Association | In English | → Associations |
| EES | Electronic Switching System(s) | In English | → Electronics |
| EETB | Electronic/Electrical Termination Building | In English | → Electronics |
| EFESE | Économie, Fonctionnement et Études des Systèmes Énergétiques | In French | → Energy economics |
| EFF | Electronic Frontier Foundation | In English | → Foundations → Electronics |
| EFFI | Electronic Frontier Finland | In English | → Organizations and associations → Electronics |
| EGIL | Electrical, General Instrumentation, and Lighting | In English | |
| EGSE | Electrical Ground Support Equipment | In English | |
| EHA | Electrohydraulic Actuator | In English | → Mechanical engineering |
| EHP | Electrical Horsepower | In English | |
| EI | Electronics Interface | In English | → Electronics |
| EIA | Electrical Industries Association (www.eia.org) | In English | → Associations |
| EIE | Équipements et Installations Électriques | In French | |
| EIfER | European Institute for Energy Research (www.eifer.uni-karlsruhe.de) | In English | → Research institutes → Energy economics |
| EIS | Electrical Integration System | In English | |
| EIVT | Electrical and Instrumentation Verification Test | In English | |
| EIVT | Electrical Interface Verification Test | In English | |
| EIVT | Electronic Installation Verification Test | In English | → Electronics |
| ElBah | Elektrische Bahnen | In German | → Serial publications, periodicals → Vehicle engineering |
| ELC | European Lighting Council | In English | → Organizations and associations → Environmental technology, water supply, waste management |
| ELCIDIS | ELectric CIty DIstribution System | In English | → Vehicle engineering |
| ELINT | Electronic Intelligence Satellite | In English | → Electronics → Spaceflight engineering, astronautics |
| ElL | Electronics Letters | In English | → Serial publications, periodicals → Electronics |
| ElLC | Electrotechnical Laboratory Circulars | In English | → Serial publications, periodicals |
| ElLR | Electrotechnical Laboratory Researches | In English | → Serial publications, periodicals |
| ElMod | Elektronnoe Modelirovanie = ElMod | Электронное моделирование | In Russian |
In Russian | → Serial publications, periodicals |
| ElMod | Электронное моделирование = (look above) |
In Russian | → Serial publications, periodicals |
| ElP | Electronics Power | In English | → Serial publications, periodicals → Electronics |
| ElPro | Electronic Progress | In English | → Serial publications, periodicals → Electronics |
| ELSECOM | European Electrotechnical Sectoral Committee for Testing and Certification | In English | → Organizations and associations → Quality management |
| ElWG | Elektrizitätswesengesetz | In German | → Energy economics |
| EMA | Electromechanical Actuator | In English | → Mechanical engineering |
| EMC | Électro-Mécanique du Cinéma | In French | → Cinema, movies |
| EMCIT | (Agreement Group for) European Testing of Electromagnetic Compatibility of IT Products | In English | → Quality management → Electronics → Telecommunications |
| EMES | Electrical, Mechanical, and Environmental Systems | In English | → Mechanical engineering |
| EMM | Electromechanical Mockup | In English | → Mechanical engineering |
| EMPGS | Electromechanical Power Generation Subsystem | In English | → Mechanical engineering |
| EMPS | Electric Machines and Power Systems | In English | → Serial publications, periodicals → Energy economics |
| EnBW | Energie Baden-Württemberg AG (www.enbw.com) | In German | → Energy economics |
| END | Énergie Non Distribuée | In French | |
| ENDESA | Empresa Nacional De Electricidad, SA | In Spanish | |
| ENEC | European Norms Electrical Certification | In English | → Standardization |
| ENEL | Ente Nazionale per l'Energia eLettrica | In Italian | |
| ENERBAT | ÉNERgie dans les BÂtiments et les Territoires | In French | → Energy economics → Building |
| ENERTHY | Énergies Nouvelles et Renouvelables, Thermique, HYdraulique | In French | → Energy economics |
| ENOB | Effective Number of Bits | In English | → Computer science → Electronics |
| ENRE | Ente Nacional Regulador de la Electricidad (www.enre.gov.ar) | In Spanish | → Central administration |
| ENSEA | École Nationale Supérieure de l'Électronique et de ses Applications | In French | → Specialized or (poly)technical colleges → Electronics |
| ENSEEIHT | École Nationale Supérieure d'Électrotechnique , d'Électronique, d'Informatique et d'Hydraulique | In French | → Specialized or (poly)technical colleges → Electronics → 00 |
| ENSEIRB | École Nationale Supérieure d'Électronique, d'Informatique et de Radiocommunications de Bordeaux | In French | → Specialized or (poly)technical colleges → Electronics → Computer science → Telecommunications |
| ENSEM | École Nationale Supérieure d'Électricité et de Mécanique | In French | → Specialized or (poly)technical colleges → Mechanical engineering |
| ENSERG | École Nationale Supérieure d'Électronique et de Radioélectricité de Grenoble | In French | → Specialized or (poly)technical colleges → Electronics |
| ENSIAME | École Nationale Supérieure des Ingénieurs en Informatique, Automatique, Mécanique, Énergétique, Électronique | In French | → Specialized or (poly)technical colleges → Computer science → Mechanical engineering → Electronics |
| EOSD | Electro-Optical Systems Design | In English | → Serial publications, periodicals |
| EP | Electrical Power | In English | |
| EP | Éclairage Public | In French | → Environmental technology, water supply, waste management |
| EPA | Elektronikus Periodika Archívum és Adatbázis | In Hungarian | → Electronics |
| EPC | Electronic Product Code | In English | → Electronics |
| EPC | Electronic Parts Control | In English | → Electronics |
| EPC | External Power Contractor | In English | |
| EPCDC | Electrical Power Conditioning, Distribution, and Control | In English | |
| EPD | Electrical Power Distribution | In English | |
| EPDB | Experiment Power Distribution Box | In English | |
| EPDC | Electrical Power Distribution and Control | In English | |
| EPDCS | Electrical Power Distribution and Control Subsystem | In English | |
| EPDS | Electrical Power Distribution System | In English | |
| EPDU | Electrical Power Distribution Unit | In English | |
| EPG | Electrical Power Generator | In English | |
| EPGCS | Electrical Power Generation and Control Subsystem | In English | |
| EPGS | Electrical Power Generation Subsystem | In English | |
| EPIA | European Photovoltaic Industry Association | In English | → Associations → Energy economics |
| EPL | Electrical Power Level | In English | |
| EPL | Electronic, Electrical, and Electromechanical Parts List | In English | |
| EPLD | Electrically Erasable Programmable Logic Device | In English | → Hardware → Electronics |
| EPOSS | European Technology Platform on Smart Systems Integration (www.smart-systems-integration.org) | In English | → Organizations and associations → Electronics |
| EPPSS | Electrical Power/Pyro Sequential System | In English | |
| EPRI | Electric Power Research Institute (www.epri.com) | In English | → Research institutes |
| EPS | Experimental Power Supply | In English | |
| EPS | Electrical Power System | In English | |
| EPS | Emergency Power System | In English | |
| EPSMA | European Power Supply Manufacturers Association | In English | → Organizations and associations → Energy economics |
| EPSP | Experiment Power Switching Panel | In English | |
| EPSTF | Electrical Power System Test Facility | In English | |
| EPY | Electronic Control Assembly Pitch And Yaw | In English | → Electronics |
| ER | Électrification Rurale | In French | |
| ERA | Electrical Replaceable Assembly | In English | |
| EROS | Electrical Racecar Overharzer Students | In English | → Specialized or (poly)technical colleges → Automobile manufacturing |
| ERR | Electrical Resistance Requirement | In English | |
| ERTG | Economic Radioisotope Thermoelectric Generator | In English | → Energy economics → Nuclear technology |
| ESD | Electronic(s) Systems Division | In English | → Electronics |
| ESE | Electrical Support Equipment | In English | |
| ESE | Electronic Support Equipment | In English | → Electronics |
| ESE | École Supérieure d’Électricité (www.supelec.fr) | In French | → Specialized or (poly)technical colleges |
| ESE | Exploitation du Système Électrique | In French | |
| ESF | Électriciens Sans Frontières | In French | → Organizations and associations → Development |
| ESI | Electrical System Integration | In English | |
| ESIE | École Supérieure Interafricaine de l'Électricité | In French | → Specialized or (poly)technical colleges |
| ESIH | École Supérieure d'Infotronique d'Haïti | In French | → Specialized or (poly)technical colleges → Computer science → Electronics |
| ESM | Electronic Support Measure | In English | → Electronics |
| ESME | École Spéciale de Mécanique et d'Électricité-Sudria | In French | → Specialized or (poly)technical colleges → Mechanical engineering |
| ESONE | Committee for European Studies on Norms for Electronics | In English | → Organizations and associations → Standardization → Electronics |
| ESP | Electronic Stability Program | In English | → Electronics |
| ESSA | Electrically Steerable Spherical Array | In English | |
| ESTF | Electronic System Test Facility | In English | → Electronics |
| ESTL | Electronic Systems Test Laboratory | In English | → Research institutes → Electronics |
| ETCI | Electro-Technical Council of Ireland | In English | → Organizations and associations |
| ETD | Electrical Terminal Distributor | In English | |
| ETPY | Electronic Control Assembly Thrust Vector Pitch and Yaw | In English | → Electronics |
| ETRI | Electronics and Telecommunications Research Institute | In English | → Electronics → Telecommunications |
| ETS | Electrical Test Set | In English | |
| ETV | Electrical Test Vehicle | In English | → Vehicle engineering |
| EU | Electronic Unit | In English | → Electronics |
| EUVL | Extreme Ultraviolet Lithography | In English | → Electronics |
| EVest | Elektrotehniški Vestnik | In Hungarian | → Serial publications, periodicals |
| EW | Electronic Warfare | In English | → Electronics → Military engineering |
| EW | Elektrociepłownie Warszawskie | In Polish | |
| EZU | Electrotechnical Testing Institute | In English | |
| FACE | Fonds d'Amortissement des Charges d'Électrification | In French | |
| FACE | Fonds d’Amortissement des Charges d’Électrification | In French | |
| FCC | Flat Conductor Cable | In English | |
| FEB | Functional Electronic Block | In English | → Electronics |
| FED | Fachverband Elektronik-Design | In German | → Electronics |
| FEDA | Forces Elèctriques d'Andorra | In Catalan | |
| FEF | Forskrift om elektriske forsyningsanlegg | In Norwegian | → Serial publications, periodicals |
| FEII | Fachverband der Elektro- und Elektronikindustrie | In German | → Organizations and associations → Electronics |
| Fer | Ferroelectrics | In English | → Serial publications, periodicals → Metallurgy |
| FerLS | Ferroelectrics Letters Section | In English | → Serial publications, periodicals → Metallurgy |
| FET | Feldeffekttransistor | In German | → Electronics |
| FET | Field Effect Transistor | In English | → Electronics |
| FFEO | Fachverband der Elektro- und Elektronikindustrie | In German | → Organizations and associations → Electronics |
| FGMEE | Fédération nationale des syndicats de Grossistes distributeurs en Matériel Électrique et Électronique | In French | → Organizations and associations → Trade → Electronics |
| FGPA | Field Programmable Gate Array | In English | → Electronics |
| FICIME | Fédération des entreprises internationales de la mécanique et de l'électronique | In French | → Organizations and associations → Mechanical engineering → Electronics |
| FIE | Flight Instrumentation Engineer | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics → Electronics |
| FIEEC | Fédération des Industries Électriques, Électroniques et de Communication (www.fieec.fr) | In French | → Organizations and associations → Electronics → Telecommunications |
| FIGLEC | French Investment Guangxi Laibin Electric Power Company | In English | |
| FiMek | Fizicheskaia Mekhanika | In Russian | → Serial publications, periodicals → Physics |
| FINEL | Finanziaria di Partecipazioni Elettriche | In Italian | → Finance |
| FIRE | Force d’Intervention Rapide Électricité | In French | |
| FIVRE | Fabbrica Italiana Valvole Radio Elettriche | In Italian | |
| FizEl | Fizicheskaia Elektronika | In Russian | → Serial publications, periodicals → Physics → Electronics |
| FPC | Federal Power Commission | In English | |
| FPDE | Focal Plane Drive Electronics | In English | → Electronics |
| FPGA | FIeld-Programmable Gate Array | In English | → Hardware → Electronics |
| FPGA | Field Programmable Gate Array | In English | → Electronics |
| FPL | Florida Power & Light Company | In English | |
| FTP | Foiled Twisted Pair | In English | |
| GARD | Group of Autonomous Robots for Demining | In English | → Mechanical engineering → Electronics → Military engineering |
| GATT | Gate-Assisted Turnoff Thyristor | In English | → Electronics |
| GE | General Electric | In English | → 33893 |
| GEA | Gimbal Electronics Assembly | In English | → Electronics |
| GEAESD | General Electric Aerospace Electronics Systems | In English | → Electronics → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| GEC | General Electrodynamics Corporation | In English | |
| GEDAC | General Electric Detection and Automatic Correction | In English | |
| GEII | Génie Électrique et Informatique Industrielle | In French | → Computer science |
| GEM | Generic Electronics Module | In English | → Electronics |
| GEODSS | Ground-Based Electro-Optical Deep-Space Surveillance | In English | → Spaceflight engineering, astronautics |
| GEOSEPS | Geosynchronous Solar Electric Propulsion Stage | In English | → Spaceflight engineering, astronautics |
| GEP | Génie Électrique et des Procédés | In French | → Chemical technology |
| GER | Générateurs Électro-Radiologiques (www.ger-int.com) | In French | → Veterinary medicine |
| GET | Groupe d’Exploitation Transport | In French | |
| GGF | La Gérance Générale Foncière | In French | → Accommodation |
| GIDS | General-Purpose Interactive Display System | In English | → Hardware → Electronics |
| GIMELEC | Groupement des Industries de Matériels d’Équipement Électrique et de l’Électronique industrielle associée | In French | → Organizations and associations → Electronics |
| GIMR | Groupe Ingénierie et Maintenance Réseaux | In French | |
| GIN | Growth Initiative for Nanoelectronics | In English | → Electronics |
| GIRCEP | Groupement des Industries et Centres de Recherche en Électronique de Puissance | In French | → Organizations and associations |
| GITEP | Groupement des Industries de Télécommunications et d'Électronique Professionnelle | In French | → Organizations and associations → Electronics → Telecommunications |