| ECN | Energy research Centre of the Netherlands | 荷兰能源研究中心 |
| ECN | Engineering Change Notice | 工程变更通知(供货商) |
| ECN | Electronic Commerce Network | 电子商务网络 |
| ECN | Electronic Communication Network | 电子通信网 |
| ECN | Emergency Communications Network | 应急通信网络 |
| ECN | Explicit Congestion Notification | 显性拥塞通知 |
| ECN | Lefkosa, Cyprus (Turkish Part) - Ercan Airport (Airport Code) | 塞浦路斯莱夫科萨（土耳其部分）-埃尔坎机场（机场代码） |
| ECN | Eastman Color Negative | Eastman彩色负片 |
| ECN | Etac Collaboration Network | Etac协作网络 |
| ECN | Mid Michigan Community College, Harrison, Michigan Library code | 密歇根州哈里森市中密歇根社区学院图书馆代码 |
| ECN | Engineering Change Notification | 工程变更通知 |
| ECN | Extended Choice Network (enhancement of NHS Choose & Book system) | 选择网络扩展的选择、提高国民的书系统) |
| ECN | Eventchannelnetwork (Object Oriented, Real-Time Asynchronous Communication Infrastructure for Embedded Systems) | Eventchannelnetwork（嵌入式系统的面向对象实时异步通信基础设施） |
| ECN | Electronic Component News (electronics industry periodical) | 电子元器件新闻（电子行业期刊） |
| ECN | Minimum Essential Emergency Communications Network (US DoD) | 最低基本应急通信网络（美国国防部） |
| ECN | Encoding Control Notation | 编码控制符号 |
| ECN | Ercan, Cyprus | 塞浦路斯埃尔坎 |
| ECN | Ecole Centrale de Nantes (French College of Engineering) | 南特中央学院（法国工程学院） |
| ECN | Educational Computing Network | 教育计算网络 |
| ECN | Environmental Change Network (UK) | 环境变化网络（英国） |
| ECN | Emergency Communications Network (telephone emergency services) | 应急通信网络（电话应急服务） |
| ECN | Executive Consultants Network | 执行顾问网络 |
| ECN | EcoNews Africa | 非洲生态新闻 |
| ECN | Employment Change Notice | 雇佣变更通知 |
| ECN | epidermal cell necrolysis | 表皮细胞坏死溶解 |
| ECN | Evolving Clustering Network | 演进的集群网络 |
| ECN | Environmental Capital Network | 环境资本网络 |
| ECN | Engineering Computer Network | 工程计算机网络 |
| ECN | Electronic Communications Network | 电子通信网络 |
| ECN | Electronic Change Notice | 电子变更通知 |
| ECN | Electronic Communications Network (stock market) | 电子通信网络（股票市场） |
| ECN | Equipment Control Number | 设备控制编号 |
| ECN | Electronic Crossing Network | 电子交叉网络 |
| ECN | Early Childhood Network | 幼儿网络 |
| ECN | Electron Configuration Notation | 电子构型符号 |
| ECN | Equipage Category Number | 设备类别编号 |
| ECN | Energieonderzoek Centrum Nederland | 荷兰能源中心 |
| ECN | Energy Research Center of the Netherlands (Petten, The Netherlands) | 荷兰能源研究中心（荷兰佩滕） |
| ECN | European Counter Network | 欧洲计数器网络 |
| ECN | Epoxy Cresol Novolac | 环氧甲酚酚醛清漆 |
| ECN | Eastman Color Negative (film processing) | 伊士曼彩色负片（胶片处理） |
| ECN | Enteral Clinical Nutrition | 肠内临床营养 |
| ECN | Engineering as Collaborative Negotiation | 工程合作谈判 |