# NC

NC may refer to:

## People

* Naga Chaitanya, an Indian Telugu film actor; sometimes nicknamed by the initials of his first and middle name, NC
* Nathan Connolly, lead guitarist for Snow Patrol
* Nostalgia Critic, the alter ego of Internet comedian Doug Walker from That Guy with the Glasses

## Places

* New Caledonia, special collectivity of France (ISO 3166-1 country code NC)
* New Canaan, a town in Connecticut, U.S.
* North Carolina, a U.S. state by postal abbreviation
* Northern Cyprus, a self-declared state on the island of Cyprus

## Science, technology, and mathematics
### Biology and medicine

* Nasal cannula, a device used to deliver supplemental oxygen
* Nasal chondrocytes, the cell type within the hyaline cartilage of the nasal septum
* Neural crest, a transient component of the ectoderm
* Effective number of codons, a measure to study the state of codon usage biases in genes

### Chemistry

* (-NC) Isocyanide, an organic functional group.

### Computing and internet

* NC (complexity), the set of decision problems decidable in polylogarithmic time on a parallel computer with a polynomial number of processors
* Naming Context, in Microsoft Active Directory
* NCsoft, a producer of MMORPGs such as Lineage
* Netcat, a computer network utility
* Network Computer, a diskless desktop computer in the late 1990s
* Norton Commander, an orthodox file manager program
* PernMUSH, an online game based on Anne McCaffrey's Pern novels

### Physics and materials

* Nanocarbon, a short name for material based on carbon nanotubes
* Nanocoulomb, 1:1,000,000,000 of the SI unit of electric charge
* Neutral current, a class of physics interaction where the mediating boson is neutral, especially for neutrino experiments
* Nuclear chemistry, the subfield of chemistry dealing with radioactivity, nuclear processes and nuclear properties

### Mathematics

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

### Other uses in science and technology

* National coarse, a Unified Thread Standard for screws, nuts, and bolts
* National Radio Company, American manufacturer of radio equipment from 1914 to 1991
* Noise criteria, a single-value measurement of background noise derived from a graphic representation of the sound pressure audio spectrum (noise curves)
* Noun class, a grammatical category of nouns
* Normally closed, an electrical switch where the default position is closed
* Not connected, an open cable connection or unassigned connector or part pin
* Numerical control, a method of automatic operation of machine tools
* NC MX-5 Miata, the third generation of the Mazda MX-5

## Transport

* Northern Air Cargo, an American cargo airline (IATA designator NC)
* National Jet Systems, an Australian charter airline (IATA designator NC)
* Curtiss NC, an American flying boat nicknamed the "Nancy boat"
* NC-4, the first aircraft to cross the atlantic (with multiple stops)
* NC, an international maritime distress signal

## Other uses

* NC-17, an MPAA film rating system code indicating that children under 17 are not admitted
* National Certificate, an educational award in various countries including Ireland and Scotland
* National Coalition for Syrian Revolutionary and Opposition Forces or National Coalition, a Syrian revolutionary organisation
* Nehru Centre, Mumbai, India, a cultural centre
* Newtownards Chronicle, Northern Irish newspaper
* New Centre, a former political party in France now known as The Centrists
* New Conglomerate (NC), a faction in the PlanetSide series
* New Continent School (Colegio Nuevo Continente), a private school in Mexico
* No comment, in internet slang
* No contest (combat sports)
* Non Cognizable Offense, in law
* Nepali Congress, a political party in Nepal
** Nepali Congress (Democratic)
** Nepali Congress (Rastrabadi)
* N.C., "no chord" in guitar tablature
* Nonconformity (quality), in Quality management
* Noncommercial (in Creative Commons licenses)