ECA, Eca or Eça may refer to:
Companies ECA International, a consulting firm ECA Records, a record label based in New York City Encana, a Canadian independent petroleum company that existed from 2002 to 2020 Eurocypria Airlines, a Cypriot charter airline that operated from 1992 to 2010 European Coastal Airlines, a Croatian seaplane operator that existed from 2000 to 2016
Education ACES Educational Center for the Arts, in New Haven, Connecticut, United States Edinburgh College of Art, in Scotland Education Corporation of America, a company running schools in southern American states Emmanuel Christian Academy (Ohio), in Springfield, Ohio Escuela Campo Alegre, an American international school in Caracas, Venezuela Evangel Christian Academy, in Shreveport, Louisiana Evangelical Christian Academy (Madrid, Spain) School of Communications and Arts, University of São Paulo (Portuguese: ), in Brazil
Government Bureau of Educational and Cultural Affairs, of the United States Department of State Economic Commission for Africa, a United Nations commission for encouraging economic cooperation among nations of the African continent) Economic Cooperation Administration, a former United States government agency Electronic Components Assemblies, a division of the Electronic Industries Alliance European Court of Auditors, an institution of the European Union Executive Council of Alberta, the Canadian province's executive branch Export credit agency, a private or quasi-governmental institution that acts as an intermediary between national governments and exporters United Nations Economic Commission for Africa, a commission to encourage economic cooperation among African countries
Law Electoral Count Act, of the United States Essential Commodities Act, of the Parliament of India European Chips Act, a legislative package to encourage semiconductor production in the European Union European Communities Act 1972 (Ireland), of the Oireachtas (Irish Parliament) European Communities Act 1972 (UK), of the Parliament of the United Kingdom
Medicine and anatomy ECA stack, a combination of ephedrine, caffeine, and aspirin Emergency care assistant, in the United Kingdom External carotid artery External control arm clinical trial
People António Eça de Queiroz (1891 - 1968), a Portuguese monarchist politician and agitator António Júlio da Costa Pereira de Eça (1852 - 1917), a general of the Portuguese Army, a colonial administrator and minister of War Duarte de Eça (born c. 1480), 3rd Captain-major of Portuguese Ceylon Eça de Queiroz (1845 - 1900), one of the greatest Portuguese writers in the realist style Ferdinand of Portugal, Lord of Eça (c. 1378 - c. 1460), the son of Portuguese Infant John, Duke of Valencia de Campos Filipa de Eça (c. 1480 - 1551), a 16th-century Portuguese nun Joana de Eça (1480 - 1572), a Portuguese courtier and royal favorite Luiz Eça (1936 - 1992), Brazilian pianist
Science and technology Elementary cellular automaton Engineering Critical Assessment Enterobacterial common antigen Enterprise Collaboration Architecture, a standard of the Object Management Group Ethyl cyanoacrylate European Crystallographic Association, an independent scientific organisation, representing both national crystallographic associations in Europe as well as individual members Event condition action, a principle to define triggers in a database
Sports Euroleague Commercial Assets, a private company that runs and operates the top continental-wide basketball men's professional sports club competitions in Europe European Canoe Association, the umbrella organization for canoeing sport in Europe European Club Association, an association of European football clubs
Other uses Easington Catchment Area, a group of natural gas fields in the North Sea Ecologically Critical Area, in Bangladesh Electrical Contractors' Association, a British industry association Emission Control Area, sea areas with regulated sulfur and nitrous oxides emission caps Entertainment Consumers Association, an American consumer advocacy organization Europe and Central Asia, an abbreviation used by the World Bank European Cockpit Association, a trade union European Compliance Academy, a leading European not-for-profit organization for promoting harmonization of GMP and regulatory guidelines within the EU pharmaceutical industry European Communist Action, a coalition of political parties Evangelical Church Alliance