NLN may refer to:
Groups, organizations
- National Lampoon Inc (stock symbol <code>NLN</code>), a trademark licensing company for the brand "National Lampoon"
- National League for Nursing, for education and development in the United States
- National League of the North, Irish nationalist organisation in Northern Ireland
- National Learning Network, a large UK repository of online learning materials
- National Library of Nigeria (nln.gov.ng)
- Navis Logistics Network, U.S. packing and shipping company
- NeuLion (stock ticker: <code>NLN</code>), a television and streaming company; a subsidiary of Endeavor Streaming
- New Life Network, a TV programming distributor
- Next Left Notes, radical student periodical
- (NLN), a Czech publishing house
- National Legitimist Party (NLN; ), Hungarian political party of the 1930s
Places
- New London Northern Railroad, New England, USA
- New Lane railway station (station code <code>NLN</code>), Burscough, West Lancashire, England, UK
- North Lincolnshire (ISO 3166-2:GB code <code>NLN</code>), Lincolnshire, England, UK
- Kneeland Airport (IATA airport code <code>NLN</code>), Humboldt County, California, USA
Biology
- Natronolimnobius (Nln.), a genus of archaeabacteria
- nucleus linearis (Nln), a part of the ventral tegmental area in the midbrain
- Neurolysin, a human protein found in the mitochondria, and the NLN gene that produces it
Other uses
- Mexicanero language (ISO 639 language code <code>nln</code>)
- Nelenite (IMA symbol <code>Nln</code>), a mineral
- nonbinary-liking-nonbinary (NLN), a LGBTQ slang
- No Licence Needed (NLN), a broadcasting status for television licensing in the United Kingdom