NM, nm, and variations may refer to:
Businesses and organizations Northwestern Mutual, financial services company in Wisconsin, United States Air Madrid (IATA airline designator NM), Spanish airline Mount Cook Airline (IATA airline designator NM), New Zealand airline Manx2 (IATA airline designator NM), Isle of Man airline Namarakieana Movement (NM), political party in Vanuatu Niagara Movement
Places North Macedonia, a country in the Balkans region of Europe The National Mall in Washington, D.C., United States Navi Mumbai, India New Mexico, a state of the United States (postal abbreviation) Inner Mongolia, an autonomous region of China (Guobiao abbreviation and ISO-3166-2:CN code NM) Northern Mindanao, an administrative region in southern Philippines
Science and technology
Medicine Nemaline myopathy, a neuromuscular disorder Neuromelanin, a dark pigment found in the brain Nuclear medicine, a medical imaging modality
Units of measure Nanometre (nm), an SI unit of length, equal to 10−9 m (a thousand-millionth of a metre) Nanomolar (nM), in chemistry, one thousand-millionth molar Nautical mile (NM or nmi), a unit of length used for maritime and aerospace purposes Newton-metre (N m, may also be written as N·m), a unit of torque Normal cubic metre (Nm3), a unit of volume (normal referring to standard temperature and pressure) Normalizovaný muštomer (°NM), a scale of wine must density Number metric, a measure of linear density of fibers in textiles
Other uses in science and technology nm (Unix), a computer program used as an aid for debugging
NM, nonmetallic-sheathed electrical cable (in North America), nowadays typically thermoplastic-sheathed cable
Noise margin, the amount by which a signal exceeds the minimum amount for proper operation
Other uses Never mind, or nothing much or not much in Internet slang Namma Metro, a rapid transit line in Bangalore, India Nao Sena Medal, a gallantry award for servicemen in the Indian Navy National monument National monument (United States) National Master, a chess title no mark, an athletics abbreviation indicating that an athlete participated in a field event but recorded no valid height, jump, or throw.