EC may stand for:

• EC is the IATA code for Avialeasing, an airline
• Early childhood education
• Eastern Caribbean dollar, sometimes referred to as the (Caribbean dollar|EC$" target="_blank" >^*)
• EC Comics, a now defunct comic book company
• EC numbers (Enzyme Commission numbers) are used for the numerical classification of enzymes
• EC number or EC# codes are determined by the European Commission for identifying chemicals
• EC-10, a rating given to items for emotional content in the film Equilibrium
• Ecuador (country code)
• Electron capture - a decay mode for atomic nuclei
• Electric Circus - a Canadian live dance music television program
• Electrical conductivity (EC values)
• Electronic Cash (formerly eurocheque), a debit card system used in Germany (German debit cards are dual-branded as EC and Maestro cards)
• Elimination Chamber
• Embedded C++
• Emergency contraception
• Emulsifiable Concentrate
• Entertaining Comics
• Entorhinal cortex - important memory center in the brain
• Environment Canada
• Eric Clapton
• EuroCity - a train service within the European inter-city rail network
• European Commission
• European Community
• European Constitution
• European Council
• Evolutionary computation
• Exacoulomb, an SI unit for electric charge equal to 10^{18 coulomb}
• Executive Committee
• Extended coverage - an insurance term
• Eye contact
• Ellicott City

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