| Council on Christian Colleges and Universities | Academic & Science |
| Coalition of Christian Colleges and Universities | Academic & Science |
| Council Of Christian Colleges And Universities | Academic & Science |
| College Community Credit Union (now Parma School Employees Credit Union) | Business |
| Capital Community Credit Union | Business |
| California Coast Credit Union | Business |
| Cardinal Community Credit Union | Business |
| Choice Community Credit Union | Business |
| Citizens Community Credit Union | Business |
| Christian Community Credit Union | Business |
| Clawson Community Credit Union | Business |
| Coastal Community Credit Union | Business |
| Collins Community Credit Union | Community |
| Coast Central Credit Union | Community |
| Community College of City University | Community |
| Consolidated Community Credit Union | Community |
| City Center Credit Union | Community |
| Cascade Central Credit Union | Community |
| Central Communications Credit Union | Community |
| Canterbury Christ Church University | Community |
| Church of Christ in Christian Union | Community |
| Council for Christian Colleges and Universities | Community |
| Council for Christian Colleges Universities | Community |
| Caribbean Confederation of Credit Unions | Community |
| Centex Citizens Credit Union | Community |
| Cincinnati Central Credit Union | Community |
| Community Choice Credit Union | Community |
| Churches of Christ in Christian Union | Community |
| Clark County Credit Union | Community |
| Chippewa County Credit Union | Community |
| Collegeville Community Credit Union | Community |
| Central Cenvenience Control Unit | General |
| Consortium for Clean Coal Utilization | General |
| Comprehensive Cardiac Care Unit | Medical |
| Compass Container | Regional |
| City County Credit Union | Regional |
| Compass Container Company, Incorporated | Regional |
