| Acronym | Definition |
|---|
| RLR | Roller |
| RLR | Receive Loudness Rating |
| RLR | Rahal Letterman Racing (motorsports racing team owned by David Letterman and Bobby Rahal) |
| RLR | Red Light Running |
| RLR | Recueil des Lois et Règlements (French: Collection of Laws and Regulations) |
| RLR | Real-Time Local Reflections (computer graphics) |
| RLR | Receiving Loudness Rating (telecommunications) |
| RLR | Roll Right (Hyper Logo command) |
| RLR | Reinforcement Learning Repository |
| RLR | Refuge of Last Resort (emergency management) |
| RLR | Red Line Racing (Forza Motorsport video game) |
| RLR | Ron Lummus Racing (Anaheim, CA) |
| RLR | Robertson Loia Roof (architectural firm; Atlanta, GA) |
| RLR | Rainfed Lowland Rice |