C (disambiguation)

C is the third letter in the Latin alphabet.

C or c may also refer to:

Computing[]

C (programming language), developed at Bell Labs in 1972
C, a hexadecimal digit
C, a computable function, the set of all computable decision problems
C:, or "Drive C", the default drive letter assignment for the default hard drive in DOS and Windows

Carbon or C
Atomic carbon or C
ATC code C or cardiovascular system, a section of the Anatomical Therapeutic Chemical Classification System
Haplogroup C (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup
Haplogroup C-M130 (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup once called simply C
Cytosine, nucleic acid
Cysteine
C, a prefix for astronomical objects listed in the Caldwell catalogue, ranging from C1 to C109
C, a prefix for astronomical star clusters, which follow the IAU's "Chhmm±ddd" format
c, the speed of light in a vacuum
c, the speed of sound
c, the specific heat capacity of a substance
c, any constant
C, capacitance
C, symbol of coulomb
Charm quark (
c
)
C-value, DNA contained within a haploid nucleus

C, a digit meaning twelve in hexadecimal and other positional numeral systems with a radix of 13 or greater
C, the constant of integration
C, in Roman numerals, the symbol for 100
C, ℂ, or $\mathbb {C}$ , the set of all complex numbers
ℭ or ${\mathfrak {c}}$ , the cardinality of the continuum
C, the set of continuous functions
The combination or "choose" function
c space, the space of all convergent sequences in functional analysis

C (novel), a novel by Tom McCarthy
C, a 1924 novel by Maurice Baring
C Magazine, a magazine published by Cardinal Courier Media
"C" Is for Corpse, the third novel in Sue Grafton's "Alphabet mystery" series, published in 1986
C-lehti ('C-magazine'), a defunct Finnish computer magazine

NZR C class (1873) train
NZR C class (1930) train
C, or 0-6-0 classification, a type of locomotive with three powered axles
C, the unofficial designation used by the U.S. Navy classification for Protected Cruisers and Peace Cruisers before the 1920 reclassification.

Prefix "c", to specify a column number as in-source-locator in old citations
С, a letter of the Cyrillic alphabet
C (anime), by Tatsunoko Production, Fuji TV
C (grade), a satisfactory grade in education
C (plastic toy), a plastic toy from former Czechoslovakia
Citigroup, Inc.'s stock ticker symbol
Gaius or C
Center Party (Sweden), a Swedish political party
Mansfield Smith-Cumming or C (1859–1923), Chief of the SIS, the UK Secret Intelligence Service, also known as MI6
- His successors as Chief of the SIS have since been generally known by his alias, C
C, also known as Max Denbigh, a character played by Andrew Scott in the film Spectre
c (IPA) in the International Phonetic Alphabet (IPA), the voiceless palatal stop
Dominical letter C for a common year starting on Friday
C, the production code for the 1964 Doctor Who serial The Edge of Destruction
Charlie, the military time zone code for UTC+03:00
c, alternative name for Grimes (musician)
Farmall C, a tractor produced by International Harvester from 1948 to 1951
C (restaurant), a restaurant in Tampere, Finland