| Acronym | Definition |
|---|
| ECR | Efficient Consumer Response |
| ECR | European Congress of Radiology |
| ECR | Ethique et Culture Religieuse (French: Ethics and Religious Culture; Quebec, Canada) |
| ECR | Electron Cyclotron Resonance |
| ECR | Electronic Cash Register |
| ECR | Euro Cargo Rail |
| ECR | Early Career Researcher |
| ECR | Engine Control Room (ships) |
| ECR | European Court Reports (EU case law) |
| ECR | East Coast Radio (South Africa) |
| ECR | El Camino Real (Kings Highway; California) |
| ECR | Engineering Correction Reviews |
| ECR | Engineering Change Request |
| ECR | Export Control Reform (trade) |
| ECR | Enhanced Carrier Route (USPS) |
| ECR | Export Credit Refinancing |
| ECR | Études, Conception, Réalisation (French: Studies, Design, Development) |
| ECR | Extended Constructed Response (scoring tool, education) |
| ECR | Epoxy Coated Rebar (also seen as E) |
| ECR | European Commission Representation |
| ECR | École de Conduite Routière (French driving school) |
| ECR | Extensor Carpi Radialis (muscle) |
| ECR | École du Chêne et de la Rivière (French martial arts school) |
| ECR | Espace Chorégraphique Rochefortais (French dance school) |
| ECR | Electronic Combat/Reconnaissance |
| ECR | Education Credit (IRS) |
| ECR | Enhanced Call Routing |
| ECR | Electronic Court Records |
| ECR | Electronic Combat Range |
| ECR | Emergency Control Room |
| ECR | Entente Cycliste Renanaise (French cycling club) |
| ECR | EEPROM (Electrically Erasable Programmable Read-Only Memory) Control Register (also seen as EECR) |
| ECR | Error Cause Removal |
| ECR | Evidence-Informed Case Rate (health care budgeting) |
| ECR | Early Childhood Resource |
| ECR | Easements with Covenants and Restrictions (real estate rights) |
| ECR | East Conference Room (various locations) |
| ECR | Entreprises Carnutes Réunies (French civil engineering company) |
| ECR | Effective Contrast Ratio |
| ECR | Electronic Care Record (healthcare) |
| ECR | Essonne Construction Rénovation (French construction and renovation company) |
| ECR | Earth Centered Rotating |
| ECR | Executive Conference Room |
| ECR | Enforcement Case Review |
| ECR | Expanded Church Response (Zambia) |
| ECR | Egress Committed Rate (networking) |
| ECR | Enterprise Change Request (engineering analysis) |
| ECR | Emerald City Roundup (Seattle, WA) |
| ECR | Electron Counting Rule |
| ECR | Effective Casualty Radius |
| ECR | Effective Cleaning Radius |
| ECR | Europees Centrum Restauratietechnieken (Dutch: European Centre Restoration Techniques; Belgium) |
| ECR | Expander Connection Router (SAS) |
| ECR | Economic Continuous Rating |
| ECR | East Coast Ramble |
| ECR | El Camino Resources, Ltd. |
| ECR | Engineer Change Request |
| ECR | East Coast Repository |
| ECR | Existing Condition Report |
| ECR | Engineering Change Request/Report |
| ECR | Environmental Compliance Report |
| ECR | Enemy Contact Report |
| ECR | Equipment Custody Record |
| ECR | Environmental Compliance & Restoration |
| ECR | Error Containment Region |
| ECR | Embedded Computer Resource |
| ECR | Eligible Couple Register (census research; India) |
| ECR | Effective Clutter Region |
| ECR | Except Change Route to Read |
| ECR | Entreprise de Construction de Rosières (French construction company) |
| ECR | Equipment Certification Request |
| ECR | Estimated Cost Replacement |
| ECR | Engineering Change Status Report |
| ECR | Engineering Capability Release |
| ECR | Energy Consumption Report |
| ECR | Enabling Capability Recipient |
| ECR | Engineering Certification Request |
| ECR | Error Correction Radius |
| ECR | Expected Citation Rate |
| ECR | Exchange Carrier Representative |
| ECR | Excess Contribution Refund |
| ECR | Experiential Compatibility Resourcing (professional recruitment) |