NCS may refer to:

Organizations

* NASCAR Canada Series, canadian stock car racing series * National Career Service (India) * National Cartoonists Society, US * National Center for Simulation, US defense technologies association * National Children's Study, US cohort study * National Citizen Service, voluntary service for 16-17-year-olds in England * National Clandestine Service, later Directorate of Operations, a component of the CIA * National Crime Squad, a former British police organisation * National Communications System, a former US agency * National Convenience Stores, a US company * Naval Canteen Service, the Royal Navy branch of the NAAFI * NCS Group, formerly National Computer Systems, Singapore * North Carolina Symphony, based in Raleigh, North Carolina * North Coast Section, an athletic organization in California, US * NoCopyrightSounds, a British record label * Neurocritical Care Society, an international, multidisciplinary medical society

Schools and universities

* National Cathedral School, Washington, D.C. * National Cryptologic School, of the U.S. National Security Agency * Navy Children School, India * Newark Charter School, Newark, Delaware, US * Newham Collegiate Sixth Form Centre, London, England * Northland Christian School, Houston, Texas, US * North Cestrian School, Altrincham, Greater Manchester, England

Science and technology

Biology and chemistry

* N-Chlorosuccinimide, an organic chemical * Neotenic complex syndrome * Nerve conduction study, a medical diagnostic test * Neuronal calcium sensor, a family of proteins * Thiocyanate, an organic compound in the cyanate family * Natural Color System, a proprietary color model

Computing

* National CAD Standard, US * Network Computing System, an implementation of the Network Computing Architecture at Apollo Computer * Network-based Call Signaling, a protocol used with VoIP * Networked control system, closing control loops with a communication network

Transport

* Newark City Subway, New Jersey, US * North Central Service, a rail line in Chicago, Illinois, US

Other uses

* National Care Service, proposed social care service in the United Kingdom * National Compensation Survey, US * NATO Codification System, for items of supply * Norwegian continental shelf, the continental shelf of Norway * ''NCS: Manhunt'', a British crime drama series from 2001-2002