| Radar Meteorological Flight | Academic & Science |
| Research on Money and Finance | Academic & Science |
| Researcher Microdata File | Academic & Science |
| Robotics Middleware Framework | Academic & Science |
| Remote Management Facility | Business |
| Risk Management Frameworks | Business |
| Retirement Mutual Fund | Business |
| Reliance Mutual Fund | Business |
| Reverse Mortgage Funding | Business |
| Risk Management Framework | Business Management |
| Reservoir Microbiology Forum | Community |
| RPG Maker Forums | Community |
| Risk Management Foundation | Community |
| Reggie McKenzie Foundation | Community |
| Ranger Memorial Foundation | Community |
| Rights Management File | Computing |
| Read Me File | Computing |
| Real Media File | Computing |
| Resource Monitoring Facility | Computing |
| Resource Management Facility | Computing |
| Reputation Management Framework | Computing |
| Rich Music Format ( Beatnik) | File Type |
| Racine Metal Fab | General |
| Rolando Mineral Friends | General |
| Roblox Minecraft Fortnite | General |
| Responsible Mining Foundation | General |
| Random Mechanical Failure | General |
| The Rude, the Mad, and the Funny | General |
| Required Minimum Functionality | General |
| Rich Map Format | General |
| Requirements Modeling Framework | General |
| Redistribution Matrix File | General |
| Rocky Mountain Fabrication | General |
| René Moawad Foundation | General |
| Rendering Mechanism Format | General |
| Retarded Muppit Farm | General |
| Root Mass Fraction | General |
| Required Metabolic Functionalities | General |
| Roy Metal Finishing | General |
| Redox Modulating Formula | General |
| Rotating Magnetic Field | General |
| Rackham Merit Fellowship | General |
| Ruskin Moscou Faltischek | General |
| Raster Matrix Format | General |
| Real Medicine Foundation | General |
| Racial Modification Factor | Governmental |
| RAMNA | Indian Railway Station |
| Read Me First | Internet |
| Renaissance Medical Foundation | Medical |
| Ribosome Modulation Factor | Medical |
| Royal Marine Force | Military and Defence |
| Resource Measurement Facility | Military and Defence |
| Regional Maximum Flood | Regional |
| Rail Miniature Flash | Regional |
| Radio Mobile Freeware | Softwares |
| Rcs Module Forward | Space Science |
| Rocky Mountain Freestyle | Sports |
| Regina Minor Football | Sports |
