C30

C30, C.30 or C-30 may be:
* C-30 Condor, a converted B-2 Condor biplane used for transport
* Cierva C.30, a 1934 Spanish type of autogyro
* HMS C30, a 1909 British C class submarine
* HMS "Ceylon" (C30), a 1942 light cruiser in the British Royal Navy
* PRR C30, an American
* Volvo C30, a 3-door hatchback carand also :
* C30 Compact audio cassette with a recording time of 15 minutes per side
* King's Gambit in the Encyclopaedia of Chess Openings
* General Motors C/K Trucks C30 model
* Malignant neoplasm of nasal cavity and middle ear code
* Benq C30, a 2007-2008 mobile phone