ECA may refer to:
Government and government agencies:
- Bureau of Educational and Cultural Affairs, a part of the United States Department of State
- Economic Cooperation Administration, a former United States government agency
- European Chemicals Agency, an agency of the European Union
- European Court of Auditors, an institution of the European Union
- United Nations Economic Commission for Africa, a commission to encourage economic cooperation among African countries
- Export credit agency, a financial institution with intermediation functions between national governments and foreign companies
Law:
- European Communities Act 1972 (UK), an act of the Parliament of the United Kingdom
- European Communities Act 1972 (Ireland), an act of the Oireachtas (Irish Parliament)
- Early case assessment, the estimation of risk and cost to prosecute or defend a legal case
Education:
- ACES Educational Center for the Arts, an arts school in New Haven, Connecticut, USA
- Escuela Campo Alegre, an American international school in Caracas, Venezuela
- Edinburgh College of Art, an art school in Edinburgh, Scotland
- Education Corporation of America, a company running schools in southern USA states
- Escola de Comunicações e Artes (School of Communication And Arts), of the University of São Paulo, Brazil
- Evangelical Christian Academy (disambiguation)
- Evangel Christian Academy, in Shreveport, Louisiana
Medicine and anatomy:
- ECA stack, a drug combination of ephedrine, caffeine, and aspirin
- External carotid artery, a major artery
- Emergency care assistant, an ambulance driver in the United Kingdom
Organizations:
- Ecosystems Climate Alliance, an alliance of eleven NGOs committed to keeping natural terrestrial ecosystems intact
- Electronic Cigarette Association, a trade association for the electronic cigarette industry
- Electronic Components Association, ECA represents designers, manufacturers and suppliers of passive and electromechancial electronic components, connectors ,wire and cable, component arrays and assemblies, and materials and support
- Entertainment Consumers Association, a membership organization representing North American video game consumers
- European Cheerleading Association, an association representing cheerleading in Europe
- European Club Association, an association of European football clubs, which was founded in January 2008
- European Cockpit Association
- European Canoe Association, the European governing body for canoeing
Science and technology:
- Electrical circuit analysis, an aspect of Network analysis
- Embodied conversational agent, a type of embodied agent in artificial intelligence
- Enterprise Collaboration Architecture, a standard of the Object Management Group
- Event condition action, a principle to define triggers in a database
- Elementary cellular automaton, a class of simple mathematical models of spatially extended systems
- Ethyl cyanoacrylate, a type of glue
Other:
- Easington Catchment Area, a group of natural gas fields in the North Sea
- ECA International, a consulting firm
- Elemental Cost Analysis, a method of recording which enables the cost of a scheme to be monitored during design development; see Elemental cost planning
- Eurocypria Airlines
- Electronic Arts, a computer-game company
- ECA Services, an industrial and medical computer supplier
- Europe and Central Asia, an abbreviation used by the World Bank