Eco

Eco may refer to (not as an abbreviation)

• eco-, a prefix mostly relating to ecological or environmental terms
• .eco, (dot-eco), a proposed top-level domain for the Internet
• Eco (currency), a proposed currency
• Eco (video game), a computer simulation game
• Umberto Eco, philosopher, semiotician, novelist
• Eco, a character, played by Jacqueline Duncan, on the children's show The Shak
• The natural substance of energy and power in the "Jak and Daxter" games

As an abbreviation

• ECO - European Communications Office
• Eco - Verband der deutschen Internetwirtschaft, German electronic commerce group
• Employee Car Ownership, an alternative to the traditional methods of providing Company Cars
• Eco - Eco Textbooks, Recycling of used textbooks group
• Economic Cooperation Organization, an international organization involving seven Asian and three Eurasian nations
• Electronic Countermeasures Officer, an officer in the reimagined Battlestar Galactica series
• Encyclopaedia of Chess Openings, a scheme to classify chess openings
• Enterprise Core Objects, software development framework useful for domain-driven design
• The Environmental Commissioner of Ontario
• Environment and Conservation Organisations of Aotearoa New Zealand
• Engineering Change Order, used for changes in documents such as processes and work instructions
• English Chamber Orchestra, a chamber orchestra based in London
• Equity carve-out, a sort of corporate restructuring
• Epichlorohydrin, a type of synthetic rubber
• Eternally Collapsing Objects, an alternate theory of black hole. See Magnetospheric eternally collapsing object
• Noticias ECO, a now defunct 24-hour Spanish-language cable news network, owned and operated by Televisa
• Entry clearance officer
• Economizer (ECO), a heat exchanger unit in plant engineering, used to preheat steam with flue gas or condensate, therefore "economizing" the process by using heat that would have otherwise be wasted
• Esporte Clube Osasco, a Brazilian football (soccer) club

As a Surname

• Umberto Eco, Italian author