| Acronym | Definition |
|---|
| EC | European Commission (European Union) |
| EC | Economy |
| EC | Ecuador |
| EC | Economics |
| EC | European Community (archaic; European Union is preferred) |
| Ec | Escherichia Coli |
| EC | Extracellular |
| EC | Environment Canada |
| EC | Early Childhood (ESRB) |
| EC | European Council |
| EC | Executive Committee |
| EC | Electronic Commerce |
| EC | Enzyme Commission |
| EC | Emergency Contraception |
| EC | Eye Contact |
| EC | Education Center |
| EC | Executive Council |
| EC | Eric Clapton |
| EC | Electric Company |
| EC | Executive Council (Maquis Forces International) |
| EC | Engineering Council |
| EC | Endothelial Cell |
| EC | Eye Candy |
| EC | Election Commission |
| EC | Everclear (band; window cleaner; liquor) |
| EC | Ethics Committee |
| EC | Error Correction |
| EC | Evolutionary Computation |
| EC | Electrical Conductivity |
| EC | European Country |
| EC | Exceptional Children |
| EC | Electoral College |
| EC | Emergency Care |
| EC | Electronics Company |
| EC | Environmental Compliance |
| EC | Excellent Condition |
| EC | Equipment Company |
| EC | Episcopal Church |
| EC | Electric Cooperative |
| EC | esophageal cancer |
| EC | European Credit |
| EC | Endometrial Cancer |
| EC | Evolutionary Computing |
| EC | Engineering Change |
| EC | Expert Committee |
| EC | Extra Curricular |
| EC | Eddy Current |
| EC | error control (US DoD) |
| EC | Elvis Costello (singer) |
| EC | Elliptic Curve |
| EC | Electronic Component |
| EC | East Campus (MIT) |
| EC | Escape Character |
| EC | Electrical Contractor |
| EC | Economically Disadvantaged |
| EC | Effective Concentration |
| EC | Emergency Coordinator |
| EC | Extra Credit |
| EC | Environment Committee |
| EC | Electron Capture (nuclear physics, nuclear chemistry) |
| EC | Elemental Carbon |
| EC | Eurocrypt (Conference) |
| EC | Enterprise Community |
| EC | Eastern Conference (hockey) |
| EC | Emulsifiable Concentrate |
| EC | Earlham College |
| EC | Enterprise Controlling (SAP software) |
| EC | Eagle Creek (Indiana) |
| EC | Engine Control |
| EC | Enterococci |
| EC | Evaluation Center |
| EC | Economic Capital |
| EC | Extracranial |
| EC | enemy combatant (US DoD) |
| EC | Eckerd College (St. Petersburg, Florida) |
| EC | Elimination Communication (method of infant toilet training) |
| EC | Executive Chef |
| EC | Employee Compensation |
| EC | Eric Cartman (cartoon character) |
| EC | Electrical Circuit |
| EC | Electrochromic |
| EC | End Customer |
| EC | Erie Canal |
| EC | Embryonal Carcinoma |
| EC | Emmanuel College |
| EC | Exchange Carrier |
| EC | EtherChannel (Cisco) |
| EC | Electrically Conductive |
| EC | Eastern Caribbean Dollar (used by member Caribbean nations) |
| EC | Equipment and Components |
| EC | Edward Cullen (Twilight novel character) |
| EC | Extended Coverage (property insurance covering riot, hail, smoke, explosion, wind, aircraft, vehicle, etc.) |
| EC | Ellicott City (Maryland) |
| EC | Epcot (Disney) |
| EC | Equipment Category |
| EC | Electric Chair |
| EC | Extended Coverage (fire sprinklers) |
| EC | Entorhinal Cortex |
| EC | Echo Control |
| EC | Electronic Combat |
| EC | Exact Change |
| EC | Evaluation Capacity |
| EC | Ethylene Carbonate |
| EC | Explorers Club |
| EC | Established Church |
| EC | Euro City (international european fast trains) |
| EC | Extended Control |
| EC | Electron Configuration |
| EC | Jugendverband Entschieden für Christus (Kassel, Germany) |
| EC | Educational Comics |
| EC | Entertaining Comics (publisher of Mad and Tales from the Crypt) |
| EC | Electron Cloud |
| EC | Econoline Crush (band) |
| EC | Exit Criteria |
| EC | Ethylcellulose |
| EC | Ease of Communication (hearing aids) |
| EC | Expense Control |
| EC | Externally Connected (spatial reasoning) |
| EC | Echo Canceler |
| EC | Elastin and Collagen |
| EC | Elevation Certificate |
| EC | Equipment Code |
| EC | Erskine College (Due West, SC) |
| EC | Elon College |
| EC | Earth Coverage |
| EC | Erindale College (Canada) |
| EC | Electronic Cinema |
| EC | Epilepsy Canada (Thornhill, ON, Canada) |
| EC | Experiment Container |
| EC | Energy Controller |
| EC | Eccentric Cam |
| EC | Earth Curvature |
| EC | Engineer Circular (USACE) |
| EC | Enabling Capability |
| EC | Elongated Coin |
| EC | Eisenmenger Complex (congenital heart defect) |
| EC | East Commons (Everquest) |
| EC | Exempli Causa (Latin: For Example) |
| EC | Enterprise Consultancy (US Army AMEDD) |
| EC | Edwards Cinemas |
| EC | Essentiality Code |
| EC | Emergency Capability |
| EC | Energy Curable |
| EC | Conseil d'Europe |
| EC | Edge Coupled |
| EC | Eternal Companion |
| EC | Emerson College, Boston, Ma |
| EC | Emergency Cleanup |
| EC | Eclipse Console |
| EC | Enteric Coat |
| EC | Equipment Closet |
| EC | Embry Call (Twilight character) |
| EC | Equipment Custodian |
| EC | Evil Council (gaming) |
| EC | Equipo Catalán |
| EC | External Carrier |
| EC | Expansion Coil |
| EC | Exercise Countermeasure |
| EC | Expedited Cleanup |
| EC | Essentially Code |
| EC | Estimator-Correlator |
| EC | Evansville Chrysler (ammunition headstamp) |
| EC | Emirates Computer (Abu Dhabi, UAE) |
| EC | Electronically Challenged |
| EC | Electronic Clipboard |
| EC | Explosives Chemistry |
| EC | Embarked Commander |
| EC | Evening Core (shift) |
| EC | Engagement Controller |
| EC | Enterprise Communicator |
| EC | Emitter Count |
| EC | London Eastern Central (postcode, United Kingdom) |
| EC | Enemy/Electromagnetic Capability |