CN

CN, cn and other variants may refer to:

Companies

C N Air, an airline in Spain; see Airline codes-C
Canadian National Railway, a Canadian Class I railway headquartered in Montreal, Quebec
Canadian Northern Railway, a historic Canadian transcontinental railway
China Netcom, a former telecommunication service provider in People's Republic of China
Collegiate Network, an organization that provides assistance to conservative and libertarian publications
Grand China Air, a Chinese airline based at Haikou Meilan International Airport, IATA code CN
Westward Airways (Nebraska), a former airline, IATA code CN (dissolved 2005)

Cartoon Network, an American Television Channel
- Its many international channels
Chaotic neutral, an alignment in the Dungeons & Dragons role-playing game
Crosby & Nash, a folk-rock duo

Comité National de Secours et d'Alimentation, a humanitarian aid organization in Belgium in World War I
Carson-Newman College, a college in Jefferson City, Tennessee
Chinese Nationalist Party (Kuomintang), a centre-right political party in the Republic of China on Taiwan
Commonwealth of Nations, an intergovernmental organisation of territories of the former British Empire
Conference North, an English football league

C. N. Jayadevan (born 1950), Communist Party of India (Marxist) politician from Thrissur and Member of the Legislative Assembly in 1996
C.N. Ashwath Narayan (born 1969), Indian politician and a Member of Karnataka Legislative Assembly
Chuck Norris (born 1940), American martial artist and actor

People's Republic of China, a sovereign state located in East Asia, ISO 3166 country code CN
CN Centre, an arena in Prince George, British Columbia
CN Tower, communications and observation tower in Toronto, Ontario

Computational neuroethology, the study of animal behavior and its control by the nervous system
Copy number, the number of copies of one or more sections of the DNA of a genome
Cranial nerve, a nerve that emerges directly from the brain

CN gas, a substituted acetophenone used as a riot control agent
Calcineurin, a protein phosphatase abbreviated CN
Copernicium, a chemical element with symbol Cn and atomic number 112
Cyanide, any chemical compound that contains a carbon atom triple-bonded to a nitrogen atom, -CN
- Cyanide radical, one of the first detected molecules in the interstellar medium
Cyanogen, a colorless, toxic gas with a pungent odor, (CN)₂
Cyano radical, a diatomic radical, CN

.cn, country code top-level domain for mainland China
Common Name, an attribute of the Lightweight Directory Access Protocol protocol family
Common Name, an attribute of X.509 public-key certificates
Correspondent Node, part of the definitions for the Mobile IP protocols
VIA CN, a 64-bit CPU for personal computers

Carrier-to-noise ratio C/N, the signal-to-noise ratio of a modulated signal
Curve number, a parameter used in hydrology for predicting direct runoff or infiltration from rainfall

Cn (digraph), a digraph used in English for a few words of Greek origin
Chief of Navy (Australia), the most senior appointment in the Royal Australian Navy
Combined Nomenclature, the EU’s coding system for classifying products for customs and statistical purposes
Credit note, a commercial document issued by a seller to a buyer
Vehicle registration code for County Cavan, Ireland
Vehicle registration code for Province of Cuneo, Italy
Gnaeus (disambiguation) abbreviated cn., a Roman praenomen
Certified Nutritionist
Counter narcotics