ECN

ECN may refer to:

Organizations and companies

 * ECN (TV station), former name of NEN, in New South Wales, Australia
 * ECN Capital, a Canadian financing company
 * Electoral Commission of Namibia
 * Energy Research Centre of the Netherlands (Dutch: Energieonderzoek Centrum Nederland)
 * Environmental Change Network, of the British Natural Environment Research Council
 * Ercan International Airport, in Northern Cyprus
 * European Competition Network
 * European Crowdfunding Network

Science and technology

 * Electrochemical noise, fluctuations of current and potential

Computing

 * Electronic communication network, for trading of financial products
 * Explicit Congestion Notification, in network congestion
 * Encoding Control Notation, a formal language that is part of the Abstract Syntax Notation One
 * Ethernet Consist Network, protocol used in train communications

Other uses

 * Engineering change notice, used to implement changes to components or products
 * Enhanced capital note, a fixed-income instrument
 * Eastman Color Negative, a photographic processing system