NLR

NLR may refer to:

Places

 * National Library of Russia, Saint Petersburg
 * North Little Rock, Arkansas

Medicine

 * Neutrophil to lymphocyte ratio, a marker of subclinical inflammation
 * Nucleotide-binding leucine-rich repeat receptor/NOD-like receptor, a family of intracellular immunoreceptors

Rail transport

 * Newark Light Rail, New Jersey, U.S.
 * Newcastle Light Rail, Newcastle, New South Wales, Australia
 * North London Railway
 * Northampton and Lamport Railway, England
 * Northern Latitudinal Railway, a railway in Russia

Other uses

 * National LambdaRail, a high-speed computer network
 * Nazi Lowriders, a white prison and criminal organization
 * New Left Review, a political academic journal
 * Royal Netherlands Aerospace Centre