C4

Look up C4 or c4 in Wiktionary, the free dictionary.

C4, C04, C.IV, C-4, or C-04 may refer to:

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)
Omotesandō Station, a Tokyo Metro subway station (station number: C-04)

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

C4 (conference), a Macintosh software developers conference
C4 Engine, a next-generation 3D game engine
C4 model (software), 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

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

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

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

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

C4 (classification), a Paralympic cycling classification
C-4, professional wrestler Paul Burchill's name for his finishing move, a moonsault uranage
C4, an abbreviation for a four-man Sprint Canoe, see Canoe racing
C4, a term used to refer to the UEFA Intertoto Cup, a football competition (mainly used in non-English speaking countries)
C4 level, a challenge square dance program at the Challenge 4 level

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

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

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.