| RRF | Radiation Request Form 
| Others |
| RRF | Ragged Red Fiber
| Others |
| RRF | RailRoad Research Foundation
| Others |
| RRF | Rapid Respond Force
| Others |
| RRF | Rapid Response Force
| Others |
| RRF | Rapid Response Fund
| Others |
| RRF | Raptor Research Foundation
| Others |
| RRF | Reading Reform Foundation
| Others |
| RRF | Ready Reserve Fleet
| Others |
| RRF | Ready Reserve Force
| Others |
| RRF | Real Return Fund
| Others |
| RRF | Receive Frequency Reject Filter
| Others |
| RRF | Recovery and Resilience Facility
| Others |
| RRF | Recovery Register File
| Others |
| RRF | Recycling Research Foundation
| Others |
| RRF | Redstone Radiation Flux
| Others |
| RRF | Reformation and Revival Fellowship
| Others |
| RRF | Registration Renewal Fee
| Others |
| RRF | Regularized Random Forest
| Others |
| RRF | Relative Response Factor
| Others |
| RRF | Religious Research Foundation
| Others |
| RRF | Remat Request Form
| Others |
| RRF | Remote Radio Frontend
| Others |
| RRF | Reordered Row Format
| Others |
| RRF | Research Reinvestment Fund
| Others |
| RRF | Resettlement Registration Form
| Others |
| RRF | Residential Research Facility
| Others |
| RRF | Residual Renal Function
| Others |
| RRF | Residue Reduced Form
| Others |
| RRF | Resource Recovery F
| Others |
| RRF | Resource Recovery Facility
| Others |
| RRF | Restaurant Revitalization Fund
| Others |
| RRF | Retina Research Foundation
| Others |
| RRF | Retirement Research Foundation
| Others |
| RRF | Returnmarket Returnrisk Freeor
| Others |
| RRF | Ribosome Recycling Factor
| Others |
| RRF | Ribosome Releasing Factor
| Others |
| RRF | Rich Release Format
| Others |
| RRF | Riders Rights Foundation
| Others |
| RRF | Ridleybank Resistance Front
| Others |
| RRF | Risk Reduction Factor
| Others |
| RRF | River Revitalization Foundation
| Others |
| RRF | River Run Farm
| Others |
| RRF | River Run Foundation
| Others |
| RRF | Rocky Ridge Farm
| Others |
| RRF | Rolling Resistance Force
| Others |
| RRF | Rolling River Fest
| Others |
| RRF | Rolls Royce Foundation
| Others |
| RRF | Rotterdam Rail Feeding
| Others |
| RRF | Royal Regiment of Fusiliers
| Others |
| RRF | Royalty Research Fund
| Others |