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 Royal Longford Rifles, auxiliary unit of the British Army 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