Organizations
- Eastview Community Church, a Mennonite Brethren local church
- Economic Coordination Committee, Pakistani cabinet-level decision-making body
- Ecumenical Christian Centre, Bengaluru, India
- Electronic Check Council, a finance related organization
- Emerald City Chronicles, a live-action role-playing troupe
- Emergency Control Centre, or Emergency Communications Center, a part of the emergency service
- End Conscription Campaign, a defunct South African anti-Apartheid organization
- Essex County Council, the elected administrative body governing of Essex, United Kingdom
- Ethiopian Catholic Church
- Ethnic Communities' Council of New South Wales, an Australian organization
- Electronic Communications Committee of the European Conference of Postal and Telecommunications Administrations
- Evangelical Covenant Church, a North American denomination
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