C5

C5, C05or C-5 may refer to:

Military use

* C-5 Galaxy, a transport aircraft from Lockheed
* HMS C5, a British C-class submarine of the Royal Navy
* USS "C-5", a C class submarine of the United States Navy
* USS San Francisco (C-5), a protected cruiser of the United States Navy
* C.V, a German designation for several World War I armed reconnaissance aircraft:
** Albatros C.V, a WWI German military reconnaissance aircraft
** AEG C.V
** DFW C.V
** Fokker C.V, a 1924 Dutch light reconnaissance and bomber biplane aircraft
** Halberstadt C.V, a German single-engined reconnaissance biplane
* SM UC-5, a 1915 German Type UC I U-boat

Transport, vehicles, roads, public transport routes

* C5 automatic, a successor to Ford C4 transmission
* , the second generation of the Audi A6 built from 1997-2004
* C-5 road, a alternate road in the Eastern part of Metro Manila
* Bavarian C V, a 1899 German express train locomotive model
* Chevrolet Corvette C5, the fifth generation of the Chevrolet Corvette sports car
* Citroën C5, a brand of car manufactured by Citroën
* Sauber C5, a
* Sinclair C5, an electric moped designed by Clive Sinclair
* WLWR Class C5, a Waterford, Limerick and Western Railway Irish steam locomotive

Biology

* In human anatomy, C5 may refer to::* 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
** C5a, an inflammatory peptide
* ATC code C05, a section of the Anatomical Therapeutic Chemical Classification System
* C05, Malignant neoplasm of palate ICD-10 code

Other uses

* C5, the envelope size suitable for the A4 paper size folded so that it is the same width as A4, but one half of the height.
* 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 computer operating system
* CommutAir IATA code
* Tenor C, also known as C5
* In algebraic chess notation, c5 (with a lower-case letter) refers to the square of the chessboard denoted in descriptive chess notation by QB5 for White and QB4 for Black. In the Sicilian Defense, a response to 1. e4/P-K4, it is the square to which Black moves a pawn on Black's first move, viz. 1. e4 c5.