ECT
- Catalan Workers' Left
- Correios
- ECT (TV programme)
- Ealing Community Transport
- East Chicago Transit
- Eastern Continental Trail
- Ecarin clotting time
- Ectomesenchymal chondromyxoid tumor
- Ecuador Time
- Eddy-current testing
- Edge crush test
- Electrical capacitance tomography
- Electrochemotherapy
- Electroconvulsive therapy
- Elementary cognitive task
- Elementary comparison testing
- Emirates College of Technology
- Emission computed tomography
- Energy Charter Treaty
- Eternal conscious torment
- European Centre of Technology
- Evangelicals and Catholics Together
- Expectation confirmation theory
- École Canadienne de Tunis