NSM may refer to: Businesses New Seasons Market, a chain of grocery stores Nack, Schulze und Menke, a German manufacturer of jukeboxes NASDAQ Stock Market Nederlandsche Stoomboot Maatschappij, a Dutch shipping line Nederlandsche Scheepsbouw Maatschappij, a Dutch shipbuilder
Computing N-ary storage model, of database management systems Network and Systems Management, software made by Computer Associates Network security monitor or intrusion detection system Network Status Monitor protocol, of the Network File System
Military Nasjonal Sikkerhetsmyndighet, the Norwegian National Security Authority Naval Strike Missile, a cruise missile developed by Kongsberg Defence & Aerospace 1997–2007 Nausena Medal, an Indian military award
Politics National Socialist Movement, various neo-Nazi organizations New Socialist Movement, an Indian political party in Gujarat New social movements, which depart from conventional paradigms
Science and medicine National Science Museum of Japan's collection code Natural semantic metalanguage, in linguistics Neurogenic stunned myocardium New Smoking Material, tobacco substitutes Nipple-sparing mastectomy, a type of surgery Other uses Norseman Airport, Western Australia (IATA code:NSM) Non-Stipendiary Minister, an unpaid priest New Sector Movements, a British music project