C5
Appearance
	
	
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
 - Audi A6 (C5), the second generation of the Audi A6 built from 1997-2004
 - C-5 road, an 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 Sauber sport car
 - 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.
 - Microsoft Dynamics C5, a software package that can be integrated with Microsoft Outlook