NLR may refer to:
Places[edit]
- National Library of Russia, Saint Petersburg
- North Little Rock, Arkansas
Medicine[edit]
- 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[edit]
- 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[edit]
- 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