C5

C5, C05, C V or C-5 may refer to:

Military use

 * Lockheed C-5 Galaxy, a military transport aircraft
 * C-5 North Star, a 1940s Canadian military aircraft
 * HMS C5, a 1906 Royal Navy C-class submarine
 * USS C-5 (SS-16), a 1908 United States Navy C-class submarine
 * USS San Francisco (C-5), an 1889 United States Navy protected cruiser
 * Albatros C.V, a World War I German military reconnaissance aircraft
 * AEG C.V, a World War I prototype German two-seat biplane reconnaissance aircraft
 * DFW C.V, a World War I German military reconnaissance aircraft
 * Fokker C.V, a 1924 Dutch light reconnaissance and bomber biplane aircraft
 * Halberstadt C.V, a World War I German single-engined reconnaissance biplane
 * Fokker C-5, an American military version of the Fokker F.VII aircraft
 * SMS UC-5, a 1915 German Type UC I U-boat
 * C-5 (blimp), a United States Navy airship that attempted a trans-Atlantic flight in 1919

Road

 * C5 automatic, a successor to Ford C4 transmission
 * Chevrolet Corvette C5, the fifth generation of the Chevrolet Corvette sports car
 * Citroën C5, a car manufactured by Citroën
 * Omoda C5, a car manufactured by Chery
 * Sauber C5, a sportscar by Sauber
 * Audi A6 (C5), the second generation of the Audi A6 built from 1997 to 2004
 * Sinclair C5, an electric vehicle designed by Clive Sinclair
 * Circumferential Road 5 or C-5, an arterial road of Manila, Philippines

Air travel and aircraft vehicles

 * Kinner C-5, an American five cylinder radial engine for small aircraft of the 1930s
 * Spartan C5, a passenger and utility aircraft produced in the United States in the early 1930s

Rail

 * Bavarian C V, an 1899 German express train locomotive model
 * WLWR Class C5, a Waterford, Limerick and Western Railway Irish steam locomotive
 * Finnish Steam Locomotive Class C5
 * LNER Class C5, a class of British steam locomotives

Other

 * Crown C-5, a series of forklifts by the Crown Equipment Corporation
 * Saturn C-5, an American man-rated expendable rocket

Biology

 * Cervical vertebra 5, one of the cervical vertebrae of the vertebral column
 * Cervical spinal nerve 5
 * Complement component 5, a protein of the complement system
 * C5-convertase, an enzyme which splits C5 into C5b
 * Complement component 5a, an inflammatory peptide
 * ATC code C05 Vasoprotectives, a subgroup of the Anatomical Therapeutic Chemical Classification System
 * C05, Malignant neoplasm of palate ICD-10 code

Other uses

 * C5 (classification), a Paralympic cycling classification
 * C5 Envelope size
 * C5, a decision tree learning algorithm
 * C5 Generic Collection Library for C Sharp and CLI, a software library by Niels Kokholm and Peter Sestoft
 * C5 line socket, a polarised, three pole, mains voltage IEC appliance connector
 * ChorusOS, a computer operating system
 * C5, CommutAir IATA code
 * C5 or Tenor C, a musical note
 * c5, a square of the chessboard using algebraic chess notation
 * Microsoft Dynamics C5, enterprise resource planning software
 * Channel 5 (disambiguation)
 * Nokia C5 (disambiguation), a series of smartphones
 * Caldwell 5 (IC 342), an intermediate spiral galaxy in Camelopardalis
 * Concrete5, an open source content management system
 * A line of earphones from Bowers & Wilkins
 * Tha Carter V, a 2018 album by Lil Wayne
 * Central 5, an informal political cooperation between Austria, the Czech Republic, Hungary, Slovakia, and Slovenia
 * C5, the cycle graph with 5 vertices