NLU

NLU may refer to:
 * Natural-language understanding, in computational linguistics and AI
 * National Labor Union, United States, 1866–1873
 * National Law Universities, in India
 * National-Louis University, Illinois, United States
 * University of Louisiana at Monroe (called Northeast Louisiana University 1969–1999), United States
 * Felipe Ángeles International Airport, Zumpango, Mexico (opened 2022; IATA code: NLU)
 * Insel Air Aruba, a Dutch Caribbean airline (2012–2017; ICAO code: NLU)