NS as an abbreviation can mean:

Arts and entertainment

Gaming

* Natural Selection (video game), ''Natural Selection'' (video game), a mod for the game ''Half-life'' * ''NetStorm: Islands At War'', a real-time strategy game published in 1997 by Activision * Nintendo Switch, a hybrid video game console and handheld. * Jennifer Government: NationStates, a web-based simulation game

Literature

* ''New Spring'' (known to fans as "NS"), a 1999 anthology edited by Robert Silverberg and derivative 2004 novella by Robert Jordan * NS-series robots from the book ''I, Robot''

Companies

* National Semiconductor (also known as "Natsemi"), an American integrated circuit design and manufacturing company * Nederlandse Spoorwegen, the main public transport railway company in the Netherlands * Norfolk Southern Railway, a major Class I railroad in the United States, owned by the Norfolk Southern Corporation * Norfolk Southern Railway (1942–1982), the final name of a railroad running in Virginia and North Carolina before its acquisition by the Southern Railway in 1974

Government and politics

* ''Nasjonal Samling'', a 1930s Norwegian national socialist political party * National service, a name for the conscription system of some militaries * "National Socialism" or Nazism, the ideology held by, amongst many other political parties, the National Socialist German Workers Party * New Serbia (political party) (''Nova Srbija''), a political party in Serbia * People's Party (Serbia, 2017), People's Party (''Narodna stranka''), a political party in Serbia * New Slovenia (also known as ''Nova Slovenija - Krscanski Ljudska Stranka''), a right-of-centre political party in Slovenia * People's Party (Montenegro) (''Narodna Stranka''), a political party in the Republic of Montenegro

Places

* Negeri Sembilan, one of the fourteen states in Malaysia * Novi Sad, a city in Serbia (license plate code) * Nova Scotia, as the official Canadian postal abbreviation for the province

Science and technology

Biology and medicine

* Nervous system, the system of neurons that coordinates the actions of an organism * Normal saline, a solution of sodium chloride used in intravenous drips

Computing

* Name server, a computer server that implements a name service protocol ** NS record, a DNS record type * Namespace, an abstract container used in computing * Neighbor Solicitation, part of IPv6's Neighbor Discovery Protocol * NeXTSTEP, an object-oriented, multitasking operating system by NeXT, as well as a prefix for certain system-provided classes in the operating system, such as "NSString" * ns (simulator) (or "ns-2"), an open source network simulator

Mathematics

* ns (elliptic function), one of Jacobi's elliptic functions

Other uses in science and technology

* Nanosecond (abbreviated "ns"), a measure of time * Nanostructure * Neutron star, a star formed from the collapsed remnant of a massive star * New Shepard 3 (NS3), a reusable launch vehicle from Blue Origin, being tested in 2017-18 * Newton second, the SI derived unit for momentum * Not significant, when differences between categories are smaller than the amount of error/noise in the data, see Statistical significance * Nuclear Ship (NS), a ship prefix for civilian ship names * Norsk Standard, Norwegian Standard, Standards defined by Standard Norge

Other uses

* National school (Ireland), a type of school * New Style (as "N.S." in opposition to Old Style as "O.S."), indicating ''either'' a date in the Julian Calendar with the start of year adjusted to 1 January, or a date in the Gregorian calendar {{disambiguation