| RFS | Racing Four Stroke 
| Others |
| RFS | Radarange Foodservice Series
| Others |
| RFS | Radio Frequency Simulator
| Others |
| RFS | Radio Frequency Subsystem
| Others |
| RFS | Radio Frequency Switch
| Others |
| RFS | Radio Frequency System
| Others |
| RFS | Radio Frequency Systems
| Others |
| RFS | Rapid Frozen Section
| Others |
| RFS | Ready For Service
| Others |
| RFS | Real Flight Simulation
| Others |
| RFS | Real Flight Simulator
| Others |
| RFS | Receptive Field Size
| Others |
| RFS | Recommended Formats Statement
| Others |
| RFS | Recurrence Free Survival
| Others |
| RFS | Recurrence-free survival
| Others |
| RFS | Reflux Finding Score
| Others |
| RFS | Refugee Family Services
| Others |
| RFS | Regardless of Feature Size
| Others |
| RFS | Regenerating Forests Shrubs
| Others |
| RFS | Regional Flight Surgeon
| Others |
| RFS | Relapse Free Survival
| Others |
| RFS | Release For Standards
| Others |
| RFS | Remediation Funding Source
| Others |
| RFS | Remote File Server
| Others |
| RFS | Remote File Sharing
| Others |
| RFS | Remote File System
| Others |
| RFS | Rename Files Sequentially
| Others |
| RFS | Renault Forum Srbija
| Others |
| RFS | Renewable Fuel
| Others |
| RFS | Renewable Fuel Standard
| Others |
| RFS | Renewable Fuel Standards
| Others |
| RFS | Renewable Fuel Sulfur
| Others |
| RFS | Renewable Fuels Standard
| Others |
| RFS | Replica Based File System
| Others |
| RFS | Replication Factors Signals
| Others |
| RFS | Report Feedback Statement
| Others |
| RfS | Request for Selection
| Others |
| RFS | Request For Service
| Others |
| RFS | Request For Services
| Others |
| RFS | Request For Sponsorship
| Others |
| RFS | Request For Stream
| Others |
| RFS | Requests for Startups
| Others |
| RFS | Research File System
| Others |
| RFS | Resident and Fellow Section
| Others |
| RFS | Resident and Fellows Section
| Others |
| RFS | Resident Fellow Section
| Others |
| RFS | Resident Fellow Student
| Others |
| RFS | Residential Finance Survey
| Others |
| RFS | Residents and Fellows Section
| Others |
| RFS | Resilience and Food Security
| Others |
| RFS | Resource Facing Service
| Others |
| RFS | Responsible Fishing Scheme
| Others |
| RFS | Responsive Font Size
| Others |
| RFS | Responsive Font Sizes
| Others |
| RFS | Retail Financial Services
| Others |
| RFS | Returnless Fuel System
| Others |
| RFS | Reverse Function Stabiliser
| Others |
| RFS | Review of Financial Studies
| Others |
| RFS | Revolutionary Forces of Syria
| Others |
| RFS | Richmond Fellowship Scotland
| Others |
| RFS | Richmond Field Station
| Others |
| RFS | Riders For Speed
| Others |
| RFS | Ring Finger Syndrome
| Others |
| RFS | Ringed Four Stroke
| Others |
| RFS | Road Feeder Service
| Others |
| RFS | Road Friendly Suspension
| Others |
| RFS | Root File System
| Others |
| RFS | Rosita, Nicaragua
| Others |
| RFS | Royal Forestry Society
| Others |
| RFS | Royal Forestry Society of England, Wales and Northern Ireland
| Others |
| RFS | Runflat Systems
| Others |
| RFS | Rural Fire Service
| Others |
| RFS | RYreward FYfeedbacN and SYsuccess
| Others |