| EFR | Early Failure Rate 
| Others |
| EFR | Early Ford Registry
| Others |
| EFR | Eastern Frontier Rifles
| Others |
| EFR | Eastside Fire Rescue
| Others |
| EFR | Easy Fixture Removal
| Others |
| EFR | Educational Foundations and Research
| Others |
| EFR | Effective Filtration Rate
| Others |
| EFR | Efficient Foodservice Response
| Others |
| EFR | Eit Fits Realtime
| Others |
| EFR | Elected Faculty Rep
| Others |
| EFR | Electric Fixed Ratio
| Others |
| EFR | Electronic Failure Report
| Others |
| EFR | Electronic File Room
| Others |
| EFR | Electronic Flight Rules
| Others |
| EFR | Electronic Fuel Regulator
| Others |
| EFR | Elektronische Fahrdynamikregelung
| Others |
| EFR | Embedded Front Rail
| Others |
| EFR | Emergency Feature Request
| Others |
| EFR | Emergency First Responder
| Others |
| EFR | Emergency First Response
| Others |
| EFR | Employee and Family Resources
| Others |
| EFR | Employee Family Resources
| Others |
| EFR | End Function Review
| Others |
| EFR | Engine Friction Reduction
| Others |
| EFR | Engineered For Racing
| Others |
| EFR | Engineering Factual Report
| Others |
| EFR | Enhanced Failure Rate
| Others |
| EFR | Enhanced Frequency Response
| Others |
| EFR | Enhanced Full Rate
| Others |
| EFR | Enterprise File Replication
| Others |
| EFR | Entrained Flow Reactor
| Others |
| EFR | Environmental Facilities Review
| Others |
| EFR | Environmental Flow Requirements
| Others |
| EFR | Equipment Failure Reports
| Others |
| EFR | Erythrocyte Filtration Rate
| Others |
| EFR | Essential Facility Requirements
| Others |
| EFR | Essential Fault Reduction
| Others |
| EFR | European Forecourt Retail
| Others |
| EFR | Evolution Flooring Repair
| Others |
| EFR | Exceptional Family Resources
| Others |
| EFR | Excessive Fluid Rate
| Others |
| EFR | Exchange Fluctuation Reserve
| Others |
| EFR | Exchange for Risk
| Others |
| EFR | Expatriate Failure Rate
| Others |
| EFR | Expiratory Flow Rate
| Others |
| EFR | Extend Focus Range
| Others |
| EFR | Extended Flight Rules
| Others |
| EFR | Extended Focus Range
| Others |
| EFR | Extended Focusing Rnge
| Others |
| EFR | External Fault Relay
| Others |
| EFR | External Finance Relations
| Others |
| EFR | Extreme Focus Range
| Others |