ECI

• ECI Partners, a British private equity group
• ECI Telecom, an Israeli telecommunication equipment manufacturer
• El Corte Inglés, a Spanish retailer
• Engine Components Inc., an American aircraft engine manufacturer
• Eze Castle Integration, an American IT company

• Early childhood intervention, a support and educational system for very young children
• Eastwood Collegiate Institute, in Kitchener, Ontario, Canada
• Emergency care instructor, a person who provides training in emergency care
• Etobicoke Collegiate Institute, in Ontario, Canada

• Election Commission of India, a body established by the Constitution of India
• European Citizens' Initiative, in the European Union
• Evangelical Climate Initiative, in the United States

• Economic Complexity Index, an economic indicator
• Efficiency of conversion, efficiency of food conversion, an index measure of food fuel efficiency in animals
• Employment cost index, in the United States

• Earth-centered inertial, a coordinate system
• Enhanced Cartridge Interface, a computer interface
• Enterprise content integration, a software technology
• Extended Channel Interpretation, a communication protocol extension for the bar code reader to host interface
• European Color Initiative, an expert group
• E-UTRAN Cell Identity (ECI), an identity for a cell within a network in LTE

• Eastern Congo Initiative, an American development charity
• Engineering Council of India
• Evangelical Church of India
• World Federation of Energy, Chemical and Various Industry Workers' Unions, a former international trade union secretariat

{{disambiguation}}