RLR

RLR may refer to:

• Rahal Letterman Racing, an American auto racing team
• Range Life Records, an American record label
• Regular local ring
• Richard Lloyd Racing, a defunct British auto racing team
• RIG-I-like receptor, a family of intracellular receptors
• Ruislip Lido Railway, a miniature railway in England
• Rural Land Register, a British database of land ownership
• Retron Library Recombineering, a genetic technique that uses retrons