C4

C4, C04, C.IV, C-4, or C-04 often refers to the explosive. It may also refer to:

Arts, entertainment, and media

Music

C4 (American band), a neo-classical metal band set up by Michael Angelo Batio
C4 (French band), French boyband
C4 (mixtape), by American rapper Kendrick Lamar
C₄, scientific pitch notation for the note "Middle C" (261.626 Hz)
C4 Records, a record label

Other uses in arts, entertainment and media

C4 (New Zealand TV channel), a former New Zealand television music channel
1. c4, also called the English Opening, a chess opening
Channel 4, British TV channel abbreviated "C4"

Organizations

C4 (Colombia), a political party in Colombia
C4, a social welfare non-profit entity organized under section 501(c)(4) of the U.S. Internal Revenue Code
Churches Covered and Connected in Covenant, a religious association founded by Archbishop LeRoy Bailey Jr.
Craiova Group, a cooperation project of four European states

People

C4 (rapper), a rap music producer from Birmingham, England
Clarence Mitchell IV, American radio host and former politician
Chris Turner, sometimes credited as Chris Heiner, a.k.a. "C4", Australian musician, part of Modern Day Poets

Places

Caldwell 4 or NGC 7023 or Iris Nebula, a reflection nebula in the constellation Cepheus
Circumferential Road 4 or C-4, an arterial road of Manila, Philippines
Ken-Ō Expressway, a road in Japan (includes some sections of Shin-Shōnan Bypass)
Omote-sandō Station, a Tokyo Metro subway station (station number: C-04)
Wadi C-4, designation for the Tomb of Thutmose II

Science, technology, and mathematics

Biology

C4, an EEG electrode site according to the 10-20 system
Apolipoprotein C4, a protein encoded by the APOC4 gene
c4 antisense RNA, a non-coding RNA
ATC code C04 Peripheral vasodilators, a subgroup of the Anatomical Therapeutic Chemical Classification System
C₄ carbon fixation, a pathway for carbon fixation in photosynthesis that produces C4 plants
Cervical spinal nerve 4, a nerve originating in the neck
Cervical vertebra 4, one of the cervical vertebrae of the vertebral column
C04, oral cancer ICD-10 code
Complement component 4, a protein involved in the intricate complement system, encoded by C4A or C4B gene in humans
C₄ fragments, one of the types of products of catabolism pathways

Computing

C4 (conference), a Macintosh software developers conference
C4 Engine, a next-generation 3D game engine
C4 model, a graphical notation technique for diagramming software architecture
Cx4 chip, an add-on microprocessor chip employed by certain Super NES game cartridges (often incorrectly referred to as the C4 chip)
Controlled collapse chip connection or flip chip, a method for interconnecting semiconductor devices
VIA C4, a planned design of central processing unit for a personal computer

Mathematics

$C_{4}$ , the cyclic group of order 4
C4, the fourth pure "core" module in the Edexcel A-level mathematics examination

Weapons

C-4 (explosive), a type of plastic explosive
Hafdasa C-4, an Argentine submachine gun

Other uses in science and technology

C-4 (explosive), a high explosive solid
C4, butyl-type hydrocarbon chain, a type of four-carbon molecule, especially in C4 reversed-phase chromatography columns
Cluster 4, an ESA satellite that studies the Earth's magnetosphere over the course of an entire solar cycle
C-4 Protective Mask, standard issue gas mask of the Canadian Armed Forces

Sports

C4 (classification), a Paralympic cycling classification
C-4, professional wrestler Paul Burchill's name for his finishing move, a moonsault uranage
A four-man Sprint Canoe; see Canoe racing, abbreviated "C4"
The UEFA Intertoto Cup, a football competition (abbreviation "C4" mainly used in non-English speaking countries)
C4 level, a challenge square dance program at the Challenge 4 level
1. c4, or the English Opening, a chess opening

Stationery

C4, an international standard paper size (229 × 324 mm), defined in ISO 216
C4, the envelope size matching the A4 paper size

Vehicles

Aircraft

C-4, the US Army designation of the Ford Trimotor
AEG C.IV, a German World War I reconnaissance aircraft
AGO C.IV, a 1917 German reconnaissance aircraft
C-4 Academe, the military version of Gulfstream I twin turboprop business aircraft
C-4 Argonaut, a Canadair aircraft derived from the Douglas DC-4
Cierva C.4, a 1922 Spanish experimental autogyro
DFW C.IV, a 1916 German reconnaissance aircraft
Flight Design C4, a four-seat light aircraft
Fokker C.IV, a 1923 Dutch two-seat reconnaissance aircraft
Rumpler C.IV, a 1917 German single-engine, two-seater reconnaissance biplane

Automobiles

C4, a class of Audi 100 and Audi A6 cars
Chevrolet Corvette (C4), the fourth production design of the Chevrolet Corvette
Citroën C4, a car made by Citroën
Coloni C4, a Formula One car built by Enzo Coloni Racing Car Systems
Sauber C4, a Sauber sportscar
Spyker C4, a Spyker car

Locomotives

Bavarian C IV, an 1884 German steam locomotive
GS&WR Class C4, a Great Southern and Western Railway Irish steam locomotive
LNER Class C4, a class of British steam locomotives

Ships

HMS C4, a C-class submarine of the British Royal Navy
Spanish submarine C-4, a C-class submarine of the Spanish Navy
Type C4 ship, merchant cargo ships of US Maritime Commission "C" design
USS C-4 (SS-15), a C-class submarine of the US Navy
USS Philadelphia (C-4), a protected cruiser of the US Navy

Vehicle components

Ford C4 transmission, an automatic transmission
Menasco C4, a 1930s 4-cylinder, air-cooled, in-line, inverted, aero-engine

Other uses

C4, a variation of Command and control, meaning "Command, Control, Communications and Computers"
C4, the monogram of Christian IV of Denmark, used in the city arms of Kristianstad, Sweden since 1622
C4 Extreme, a sports nutrition supplement product line by Cellucor, which includes C4 energy drinks

C4

Arts, entertainment, and media

Music

Other uses in arts, entertainment and media

Organizations

People

Places

Science, technology, and mathematics

Biology

Computing

Mathematics

Weapons

Other uses in science and technology

Sports

Stationery

Vehicles

Aircraft

Automobiles

Locomotives

Ships

Vehicle components

Other uses

See also