ECN

ECN may refer to,

Engineering Change Notice - a form that records the details of an Engineering change, used in Systems Engineering and Configuration Management
Explicit Congestion Notification - a method of network congestion avoidance
Electronic Communication Network - computerized financial trading systems
European Competition Network
Energy research Centre of the Netherlands (Energieonderzoek Centrum Nederland)
Egmont Comic Creation - a part of the Egmont group
Encoding Control Notation - a formal syntax for modifying or extending standard ASN.1 encoding rules (ITU-T Rec. X.692, ISO/IEC 8825-3)
Eastman Color Negative - a photographic processing system created by Kodak specifically for color negative motion-picture films

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