NLS may refer to:

• NLS (computer system), a 1960s computing collaboration
• National Language Support (or Native Language Support), in HP software

• National Language Services, South Africa
• National Longitudinal Surveys, U.S.
• National Lifeguard Service, Canada

• Non-Linear Systems, electronics manufacturer
• Nautilus, Inc., stock symbol NLS, fitness products manufacturer

• North Leamington School, England
• Nottingham Law School, England
• National Law School of India University, Bangalore

• National Library Service for the Blind and Print Disabled, American mail service
• National Library of Scotland
• National Life Stories, at the British Library

• Labour Students, formally called National Labour Students

• Nuclear localization signal, in biology
• Nonlinear Schrödinger equation, in physics
• Non-linear least squares, in statistics, a method used in regression analysis

• Nanosatellite Launch System, based at the University of Toronto
• National Launch System, a 1991 Space Shuttle alternative study

• Nailsea and Backwell railway station station code NLS, England
• Niles (Amtrak station) station code NLS, Michigan, United States

• Nimrod Line Squadron, former military service unit at RAF Kinloss
• National League System, in English football
• Nürburgring Langstrecken Serie, a motorsport endurance series held at the Nürburgring. Formerly known as VLN (Veranstaltergemeinschaft Langstreckenpokal Nürburgring)
• New Face of Serbia (Novo lice Srbije), a political party in Serbia

• All pages with titles beginning with NLS
• All pages with titles containing NLS