Posted in Engineering, Government & Military C4 stands for Channel 4 (UK Terrestrial Television) C4 stands for Carrera 4 (Porsche 911 model) C4 stands for Butane C4 stands for Middle C (piano keyboard) C4 stands for Command, Control, Communications, and Computers (US DoD) C4 stands for Composition 4 (explosive) C4 stands for Combat Casualty Care Course C4 stands for Schedule IV Controlled Substance (USA) C4 stands for C-4 Composition 4 (explosive) C4 stands for Chaos Computer Club Cologne (German computer club in Cologne member of the CCC family) C4 stands for Center for Clouds, Chemistry and Climate C4 stands for Fourth-Generation Corvette (Chevrolet) C4 stands for Trident I Missile Controlled Collapse Chip Connect