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 * , a 1906 Royal Navy C-class submarine * , a 1908 United States Navy C-class submarine * , 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 * , a 1915 German Type UC I U-boat * C-5 (blimp), a United States Navy airship that attempted a trans-Atlantic flight in 1919

Transport, vehicles, roads, public transport routes

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