| ECR | Eagles Canyon Raceway 
| Others |
| ECR | Early Career Researcher
| Others |
| ECR | Early Career Researchers
| Others |
| ECR | Early Career Reviewer
| Others |
| ECR | East Central Railway
| Others |
| ECR | East Coast Radio
| Others |
| ECR | East Coast Ramble
| Others |
| ECR | East Coast Road
| Others |
| ECR | East Coast Rodders
| Others |
| ECR | East Coast Rover
| Others |
| ECR | East Cross Route
| Others |
| ECR | Eastern Counties Railway
| Others |
| ECR | Eastern Creek Raceway
| Others |
| ECR | EC2 Container Registry
| Others |
| ECR | Ed Carpenter Racing
| Others |
| ECR | Edmonton Capital Region
| Others |
| ECR | Efficient Consumer Response
| Others |
| ECR | Efficient Cost Reduction
| Others |
| ECR | Efficient Customer Response
| Others |
| ECR | EHR Core Research
| Others |
| ECR | El Camino Real
| Others |
| ECR | El Charco Airport
| Others |
| ECR | Elastic Container Registry
| Others |
| ECR | Electrical Characterization Reliability
| Others |
| ECR | Electron Cyclotron Resonance
| Others |
| ECR | Electronic Cash Register
| Others |
| ECR | Electronic Check Recovery
| Others |
| ECR | Electronic Combat And Recce
| Others |
| ECR | Electronic Combat Reconnaissance
| Others |
| ECR | Electronic Commerce Representative
| Others |
| ECR | Electronic Company Registration
| Others |
| ECR | Electronic Company Registrations
| Others |
| ECR | Electronic Compliance Record
| Others |
| ECR | Electronic Corner Reflector
| Others |
| ECR | Electronic Cost Report
| Others |
| ECR | Electronic Court Record
| Others |
| ECR | Electronic Court Records
| Others |
| ECR | Electronically Commutated Refrigeration
| Others |
| ECR | Emergency Crash Rescue
| Others |
| ECR | Emigration Check Required
| Others |
| ECR | Energy Cost Recovery
| Others |
| ECR | Engagement Context and Reference
| Others |
| ECR | Engine Crossmember
| Others |
| ECR | Engineering Change Record
| Others |
| ECR | Engineering Change Request
| Others |
| ECR | Engineering Change Requests
| Others |
| ECR | Engineering Correction Reviews
| Others |
| ECR | Enhanced Call Routing
| Others |
| ECR | Enhanced Carrier Route
| Others |
| ECR | Enhanced Combat Readiness
| Others |
| ECR | Environment Cleaning Roller
| Others |
| ECR | Environmental Car Recycling
| Others |
| ECR | Environmental Cleaning Roller
| Others |
| ECR | Environmental Compliance and Remediation
| Others |
| ECR | Environmental Conflict Resolution
| Others |
| ECR | Environmentally Conscious
| Others |
| ECR | Environmentally Conscious Recycling
| Others |
| ECR | Equitable Commercial Realty
| Others |
| ECR | Equivalent Continuous Rating
| Others |
| ECR | Error Correction Request
| Others |
| ECR | Euro Cargo Rail
| Others |
| ECR | Euro Currency Research
| Others |
| ECR | European Car Registration
| Others |
| ECR | European Congress of Radiology
| Others |
| ECR | European Conservatives and Reformists
| Others |
| ECR | European Court Reports
| Others |
| ECR | Eveleigh City Raceway
| Others |
| ECR | Event Counter Reset
| Others |
| ECR | Every Company's Reengineering
| Others |
| ECR | Everything Computer Related
| Others |
| ECR | Evolutionary Computing in R
| Others |
| ECR | Exotic Car Rental
| Others |
| ECR | Expected Cash Receipt
| Others |
| ECR | Experiential Compatibility Resourcing
| Others |
| ECR | Experts Consensus Rankings
| Others |
| ECR | Explore Create Repeat
| Others |
| ECR | Export Control Reform
| Others |
| ECR | Extra Care Required
| Others |