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