| | AA | | come |
| | AAS | | carrion |
| | adidas | | chicken feet |
| | avo | | come |
| | bolo | | cake |
| | C&G | | chuckle & grin |
| | C&G | | Chuckle and grin |
| | C&V | | Chapter and Verse |
| | c.a.r. | | chicken ass retard |
| | c.c.t.v. | | closed circuit television |
| | c.c.t.v. | | closed circuit TV |
| | C.E.R. | | closer economic relations |
| | C.O.B. | | Close of Business |
| | c.o.p.d. | | chronic obstructive pulmonary disease |
| | C.R.E.A.M. | | Cash Rules Everything Around Me |
| | C2B | | Consumers to Business |
| | C3CM | | Command, Control, Communications and Counter Measures |
| | C3I | | Command, Control, Communications, and Intelligence |
| | ca | | Chartered Accountant |
| | ca | | circa |
| | CADD | | computer aided design and drafting |
| | CADET | | Can't Add, Doesn't Even Try |
| | cag | | cash against goods |
| | cag | | cheap ass gamer |
| | cag | | chick acquisition guide |
| | CAGR | | Compound Annual Growth Rate. |
| | CAGR | | Compounded Annual Growth Rate n |
| | CAGR | | Cumulative Annual Growth Rate |
| | cao | | Chief Administrative Officer |
| | cao | | Chief analytics officer |
|