| Acronym | Definition |
|---|
| ECT | Electro-Convulsive Therapy |
| ECT | Engine Coolant Temperature |
| ECT | Edge Crush Test |
| ECT | Empresa Brasileira de Correios e Telégrafos (Brazil) |
| ECT | Emission Control Technologies |
| ECT | Early Childhood Teacher |
| ECT | Electronics Technician |
| ECT | East Coast Trail |
| ECT | Engineering and Computer Technology (various organizations) |
| ECT | Educational Communication and Technology (various schools) |
| ECT | Experiencing Christ Together |
| ECT | E-Commerce Times |
| ECT | École de Commerce de Tahiti (French: Tahiti Business School) |
| ECT | Entreprise de Constructions Tubulaires (French: Tubular Construction Company; Luxembourg) |
| ECT | Elliptical Cross Trainer (health equipment) |
| ECT | European Computer Telecoms (Germany) |
| ECT | Enhanced Cluster Tools |
| ECT | Enhanced Condition Table |
| ECT | Exception Console Template |
| ECT | Electronically Controlled Transmission |
| ECT | Ethernet Connectionless Trail |
| ECT | Enterprise Class Teleworker |
| ECT | Explosive Car Tuning |
| ECT | Explicit Call Transfer |
| ECT | Emission Computed Tomography |
| ECT | Expedia Corporate Travel |
| ECT | Eddy Current Testing |
| ECT | ECN-Capable Transport (explicit congestion notification) |
| ECT | European Community Treaty |
| ECT | Energy Charter Treaty (UN) |
| ECT | Eastern Cape Technikon (University of Transkei; South Africa) |
| ECT | Ethyl Centralite (propellant) |
| ECT | Ectoin (molecular solvent) |
| ECT | Energy, Commodities and Transportation (financial sector) |
| ECT | Enterprise Class Teleworker (Cisco) |
| ECT | Electronic City (India) |
| ECT | European Credit Transfer |
| ECT | Electronic Control Transmission |
| ECT | East Coast Thunder (online racing league) |
| ECT | Économique et Commerciale Technologique (French: Economic and Commercial Technology) |
| ECT | European Central Time (time zone) |
| ECT | Évasion Club Thionvillois (French travel club) |
| ECT | Enteric Coated Tablet |
| ECT | Ecuador Time |
| ECT | Estimated Completion Time |
| ECT | Election Commission of Thailand |
| ECT | Error Correction Term |
| ECT | Extrait de Cellules Thymiques (French: Extract of Thymus Cells) |
| ECT | Explicit Congestion Notification-Capable Transport |
| ECT | Environmental Control Technology |
| ECT | Escalade Club de Tours (French climbing club) |
| ECT | Exercise Control Team |
| ECT | Espace Client Transport (French: Customer Area Transportation) |
| ECT | Embedded Computer Technology |
| ECT | École Chrétienne Timothée (French: Timothy Christian School; Switzerland) |
| ECT | Expectation-Confirmation Theory |
| ECT | Europe Container Terminus (Port of Rotterdam) |
| ECT | Eau Claire Transit (Wisconsin) |
| ECT | Echo Cancellation Technique |
| ECT | Entente Cycliste Tarasconnaise (French cycling club) |
| ECT | Electrode Conductivity Transmitter |
| ECT | Equivalent Chill Temperature |
| ECT | Enterprise Caching Technology |
| ECT | Environment Control Table |
| ECT | Emulsion Chamber Technology |
| ECT | Pan-European Clinical Trials |
| ECT | Extended Combat Training |
| ECT | East Chicago Transit |
| ECT | Environmental Compliance Team |
| ECT | Equipment Craft Terminal |
| ECT | Exchange Carrier Tandem |
| ECT | Centrotemporal Epilepsy |
| ECT | Enlarged Cell Technique |
| ECT | Evaporator Condensate Tank |
| ECT | Edinburgh Corporation Transport |
| ECT | Engineer Cad Technician |
| ECT | Extended Coverage Team (various companies) |
| ECT | Electronic Clearing Terminal |
| ECT | Euro-Change-Team |
| ECT | Engineer Center Team |
| ECT | Exception Call Treatment |
| ECT | Euro Creative Tours Ltd. (UK) |
| ECT | Enterprise Complaint Tracking |
| ECT | Explicit Context Tracking |