| Acronym | Definition |
|---|
| ECM | Electronic Countermeasures |
| ECM | Enterprise Content Management |
| ECM | Engine Control Module |
| ECM | Electronic Control Module |
| ECM | Extracellular Matrix |
| ECM | Every Child Matters (UK) |
| ECM | Educazione Continua in Medicina (Italy) |
| ECM | Error Correction Mode |
| ECM | Electronic Content Management |
| ECM | Electret Condenser Microphone |
| ECM | Elliptic Curve Method |
| ECM | Error Correction Model |
| ECM | Electronically Commutated Motor |
| ECM | Engineering Change Management |
| ECM | Electro-Chemical Machining |
| ECM | Electronic Counter Measure |
| ECM | Energy Conservation Measure |
| ECM | Equity Capital Market |
| ECM | Enterprise Change Management |
| ECM | Erythema Chronicum Migrans |
| ECM | energy-corrected milk |
| ECM | European Christian Mission (various nations) |
| ECM | Error Correction Mechanism (economics/trade) |
| ECM | Engine Condition Monitoring |
| ECM | European Common Market |
| ECM | Enterprise Configuration Management |
| ECM | Environmentally Conscious Manufacturing |
| ECM | Editions of Contemporary Music (Munich, Germany record company) |
| ECM | Entitlement Control Message (digital video) |
| ECM | Enterprise Commerce Management |
| ECM | Exceptional Case Marking (grammar syntax theory) |
| ECM | East Central Minnesota |
| ECM | Exempt Commercial Market |
| ECM | Entity Coordination Management (FDDI) |
| ECM | Enterprise Compliance Management |
| ECM | Earth Covered Magazine (concrete structure used to store ammuntion) |
| ECM | Electro Cell Manipulator |
| ECM | Engineering, Construction and Maintenance |
| ECM | Endpoint Congestion Management (IETF) |
| ECM | Electronics Contract Manufacturer |
| ECM | Error Covariance Matrix |
| ECM | Entry Clearance Manager (UK immigration) |
| ECM | Enterprise Component Modeling (Platinum Technology) |
| ECM | Enterprise Channel Management |
| ECM | Expander Connection Manager (SAS) |
| ECM | Endothelial Cell Multimerin |
| ECM | Emergency Changeover Message (CCS #7/ITU-T) |
| ECM | Equivalent Current Method |
| ECM | Environmental Cooling Module |
| ECM | Exam Content Manual |
| ECM | Electronic Commerce Manager |
| ECM | Electronic Component Manufacturer |
| ECM | Expendable Crew Member (science fiction character) |
| ECM | Electro-Chemical Migration (blooming and dendrite growth in PCAs due to electro-chemical reaction) |
| ECM | Evaluation Capability Module |
| ECM | Everyplace Connection Manager (IBM) |
| ECM | Estonian Centre on Medicines |
| ECM | Eggwhite Cervical Mucus (fertility charting) |
| ECM | Error Checking Mode (fax) |
| ECM | Extensible Call Model (Cisco) |
| ECM | Engine Cranking Mode |
| ECM | Engineering Change Modification |
| ECM | Echo Canceler Method |
| ECM | Ectomycorrhyzae |
| ECM | Enterprise Control Manager (software change management application tool for AMC GDSS II) |
| ECM | Ends Center Matched |
| ECM | Executive Control Message |
| ECM | Enhanced Communications Manager |
| ECM | Exponential Correlation Model |
| ECM | Eddy Current Monitoring (nuclear power) |
| ECM | Exposure Control Monitor |
| ECM | Earliest Childhood Memory (psychology) |
| ECM | Early Christian Monument |
| ECM | Early Childhood Music |
| ECM | Ecumenical Christian Ministry (Kansas) |
| ECM | Equipment Condition Monitoring |
| ECM | Energy Conservation Management |
| ECM | Employment Case Manager (various organizations) |
| ECM | Engineering Coordination Memorandum |
| ECM | Executive Career Management |
| ECM | Executive Committee Member (various organizations) |
| ECM | Engineering Construction Management (various locations) |
| ECM | Electronic Cigarettes Mart |
| ECM | Emerging Capital Market |
| ECM | Erosion Control Mat |