CCG may refer to:
- Canadian Coast Guard
- Castor Cracking Group
- Centre for Computational Geography
- Chemical Computing Group, a pharmaceutical software company based in Montreal, Quebec
- Chesapeake Computer Group, a fleet software company based in Norfolk, VA
- Children's Cancer Study Group
- Collectible card game
- Combinatory categorial grammar, an efficiently parsable, linguistically expressive grammar formalism
- Command & Conquer: Generals
- Computational Chemistry Grid
- Cross-correlogram
- County Cricket Ground (disambiguation)
- Country commercial guides, USCS reports
- Clinical Commissioning Group, bodies which, from April 2013, will be responsible for commissioning health care in the National Health Service in the United Kingdom