| RLR | Racing League Romania 
| Others |
| RLR | Rahal Letterman Racing
| Others |
| RLR | Ranking Lexicon Reducer
| Others |
| RLR | Rare Live Recordings
| Others |
| RLR | Ray Light and Reflect
| Others |
| RLR | Ready List Root
| Others |
| RLR | Rear Luggage Rack
| Others |
| RLR | Receive Loudness Rating
| Others |
| RLR | Receiving Loudness Rating
| Others |
| RLR | Reciprocal Licensing Review Board
| Others |
| RLR | Records Label Releases
| Others |
| RLR | Red Light Running
| Others |
| RLR | Refractive Lens Replacement
| Others |
| RLR | Regional and Local Roads
| Others |
| RLR | Regular Luggage Rack
| Others |
| RLR | Reinforcement Learning Repository
| Others |
| RLR | Representation Legitimation Reproduction
| Others |
| RLR | Resident Leadership Retreat
| Others |
| RLR | Revised Local Reference
| Others |
| RLR | RIG I Like Receptors
| Others |
| RLR | Right Lumbar Region
| Others |
| RLR | Ripard Larvan Ripard
| Others |
| RLR | Robert Lyon Rasner
| Others |
| RLR | Robertson Loia Roof
| Others |
| RLR | Rocket Launching Rifle
| Others |
| RLR | Rome Laboratory Rome
| Others |
| RLR | Ron Lummus Racing
| Others |
| RLR | Ruislip Lido Railway
| Others |
| RLR | Run, Lynn, Run
| Others |
| RLR | Rural Land Register
| Others |