C4
C4, C 4 or C-4 stands for:
- Salary scale C. group 4, in Germany a historic Grade
- DIN C4, standard - size envelopes, refer to Paper Size
- Audi 100 C4, a motor vehicle of the upper middle class
- Audi A6 C4, a motor vehicle of the upper middle class
- C4 plants, a specific group plants with a metabolic peculiarity
- C4 ( New Zealand), Channel Four, a New Zealand television station
- Citroen C4, a car of the compact class
- Citroën C4 Picasso, a motor vehicle of Kompaktvanklasse
- Command, Control, Communications, Computers, see also C4ISR
- C4 ( explosive), Composition Compound 4, an explosive
- Computer Controlled Catalytic Converter
- Controlled Collapsed Chip Connection, a technology of semiconductor technology, see Flip Chip
- Corvette C4
- Swiss standard car
- Four - Canadians, a boat class in Canoeing
- Fourth cervical vertebra, see cervical spine
- Chaos Computer Club Cologne (Köln ), see Chaos Computer Club
- C4 -Script, a C-based scripting language of the game Clonk
- C -4, a telescope manufacturer Celestron Celestron see # range
- Disambiguation
- Abbreviation