CCA
- Agriculturist
- Air China
- Brocket Hall
- California Charter Academy
- California College of the Arts
- California Culinary Academy
- Canadian Canoe Association
- Canadian Cascade Arc
- Canadian Cat Association
- Canadian Cattlemen's Association
- Canadian Centre for Architecture
- Canadian Comedy Awards
- Canadian Council on Africa
- Canadian Cricket Association
- Canadian Curling Association
- Canadian Cycling Association
- Canonical correlation analysis
- Canonical correspondence analysis
- Canyon Crest Academy
- Cape Cod Academy
- Capital Cost Allowance
- Capitol Center for the Arts
- Catholic Campaign for America
- Center for Contemporary Art Kitakyushu
- Central Computer Agency
- Central Connect Airlines
- Centre for Contemporary Arts
- Centre for Curating the Archive
- Chandigarh College of Architecture
- Chartered Certified Accountant
- Chartered Cost Accountant
- Child Citizenship Act of 2000
- Children's Craniofacial Association
- China Cotton Association
- Chinese Calligraphers Association
- Chinese Chess Association
- Cholangiocarcinoma
- Chosen-ciphertext attack
- Christian Coalition of America
- Christian Conference of Asia
- Chromated copper arsenate
- Circa (disambiguation)
- Circuit card assembly
- Cisco Clean Access
- Civil Contingencies Act 2004
- Clacton Coastal Academy
- Client commission agreement
- Climate Change Agreement
- Climate Change Authority
- Climate change adaptation
- Clinger–Cohen Act
- Co-curricular activity (Singapore)
- Coastal Conservation Association
- Coca-Cola Amatil
- Cold cranking amperes
- Collaborative combat aircraft
- Coláiste Chraobh Abhann
- Combat Command
- Combatant Clergy Association
- Combinatorial clock auction
- Comics Code Authority
- Common Component Architecture
- Common carotid artery
- Commonwealth Charter Academy
- Communist Committees for Self-Management
- Communist Control Act of 1954
- Community Choice Aggregation
- Community College of Aurora
- Community Conservation Areas
- Compañía Colombiana Automotriz
- Competition and Consumer Act 2010
- Computer Corporation of America
- Concerned Children's Advertisers
- Confirmatory composite analysis
- Congenital contractural arachnodactyly
- Connected-component analysis
- Consumer Credit Act 1974
- Consumption of fixed capital
- Container Corporation of America
- Continuous configuration automation
- Copper-clad aluminium wire
- Cornerstone Christian Academy (disambiguation)
- Cornish College of the Arts
- Corporate Council on Africa
- Corrections Corporation of America
- Council for Cultural Affairs
- Council of Canadian Academies
- Court of Criminal Appeal (disambiguation)
- Covenant Christian Academy (disambiguation)
- Critics Choice Association
- Cruising Club of America
- Currency Creek Arboretum
- High-entropy alloy
- Howard Pays
- ICAO