| Acronym | Definition |
|---|
| RFS | Renewable Fuels Standard |
| RFS | Rural Fire Service (New South Wales, Australia) |
| RFS | Radio Frequency Systems (Meriden, CT) |
| RFS | Relapse-Free Survival |
| RFS | Request For Service |
| RFS | Revue Française de Sociologie (French: French Journal of Sociology; est. 1960) |
| RFS | Remote File Server |
| RFS | Remote File System |
| RFS | Review of Financial Studies (journal; Yale University) |
| RFS | Remote File Sharing |
| RFS | Ready For Service |
| RFS | Resident and Fellow Section (American Medical Association; Chicago, IL) |
| RFS | Regardless of Feature Size (ANSI Y14.5M engineering drawings & related documentation practices) |
| RFS | Removed from Service |
| RFS | Registered Financial Specialist |
| RFS | Regardless of Feature Size (geometric dimensioning and tolerancing) |
| RFS | Réseau Francophone de Sociologie (French: Francophone Network of Sociology) |
| RFS | Recoverable File System |
| RFS | Receive Frame Sync |
| RFS | River Forecast System (NOAA) |
| RFS | Request For Sample |
| RFS | Règles Fondamentales de Sûreté (French: Fundamental Rules of Safety; nuclear power) |
| RFS | Refeeding Syndrome |
| RFS | Run for the Son |
| RFS | Rosalind Franklin Society (New Rochelle, NY) |
| RFS | Reiser File System (Unix file system) |
| RFS | Retailer Financial Services (GE Capital) |
| RFS | Réseau Francophone de Sociolinguistique (French: Francophone Network of Sociolinguistics) |
| RFS | Radio Frequency Surveillance |
| RFS | Renal Fanconi Syndrome |
| RFS | Recursive Frequency Splitting |
| RFS | Roll-Fed Shrink (labeling) |
| RFS | Rust Federal Services, Inc. |
| RFS | Request for Service Message (FIPS) |
| RFS | Resource Formulation System (used by Dept of Army) |
| RFS | Reference Flight System |
| RFS | Referred in the Senate (bill status) |
| RFS | Ready/Readiness for Sea |
| RFS | Request for Subcontract |
| RFS | Ready for Summon (gaming) |
| RFS | Registrar of Friendly Societies |
| RFS | Recipe for Success (various organizations) |
| RFS | Radio Free Skaro (Doctor Who podcast) |
| RFS | Ready for School (education initiative) |
| RFS | Reason for Selling |
| RfS | Rules for Submission |
| RFS | Retired Faculty Staff (various organizations) |
| RFS | Reference Frame Selection (video coding) |