| RRL | by Ralph Lauren 
| Others |
| RRL | Radio Relay Link
| Others |
| RRL | Radio Research Laboratory
| Others |
| RRL | Rainfall Runoff Library
| Others |
| RRL | Rallye Region Limousin
| Others |
| RRL | Ralph and Ricki Lauren
| Others |
| RRL | Ralph and Ricky Lauren
| Others |
| RRL | Range Resources Ltd
| Others |
| RRL | Rapid Research Letters
| Others |
| RRL | Ready Relevant Learning
| Others |
| RRL | Rear Reading Lamps
| Others |
| RRL | Recommended Reading Library
| Others |
| RRL | Recommended Reading List
| Others |
| RRL | Recommended Repair Level
| Others |
| RRL | Reconfigurable Robotics Lab
| Others |
| RRL | Reconfigurable Robotics Laboratory
| Others |
| RRL | Regis Resources Limited
| Others |
| RRL | Regis Resources Ltd
| Others |
| RRL | Register of Radiocommunications Licences
| Others |
| RRL | Relentless Resources Ltd
| Others |
| RRL | Remote Reference Layer
| Others |
| RRL | Resource requirement list
| Others |
| RRL | Resource Requirements Language
| Others |
| RRL | Response Rate Limiting
| Others |
| RRL | Restricted Regions List
| Others |
| RRL | Resuscitation Research Laboratory
| Others |
| RRL | Reteaua Romaneasca Live
| Others |
| RRL | Revenue Resource Limit
| Others |
| RRL | Review of Related Literature
| Others |
| RRL | Rhizobium Research Laboratory
| Others |
| RRL | Righting Reflex Latency
| Others |
| RRL | Riverina Regional Library
| Others |
| RRL | Road Research Laboratory
| Others |
| RRL | Rock & Roll Library
| Others |
| RRL | Rocket Racing League
| Others |
| RRL | Rodeo Ralph Lauren
| Others |
| RRL | Rolls Royce Limited
| Others |
| RRL | Romanian Rally League
| Others |
| RRL | Rudder Reference Line
| Others |
| RRL | Running Red Lights
| Others |
| RRL | Runway Remaining Lights
| Others |