- CAAB
- California Bank & Trust
- California Jump$tart Coalition
- California Society of CPA's
- Canon Business Solutions
- Capital Directions
- Capital One Bank
- Capitol City Bank
- Carver Federal Savings Bank
- Casey Family Programs
- Cathay Bank
- Catholic Charities DC
- Catholic Charities of the Archdiocese of Miami, Inc.
- Catholic Charities USA
- Change for a Dollar
- Charles Schwab
- Charter One Bank
- Chicago Board of Trade
- Chicago Stock Exchange, Inc.
- Chick-Fil-A
- Chinatrust Bank
- Chrisman and Company, Inc.
- Chubb Group of Insurance Companies
- Citi
- Citizens Bank
- Citizens Trust
- City of Miami
- City of Oakland
- ClearPoint Financial Services
- Clinton Global Initiatives
- CNA Insurance
- CollegeInvest
- Colorado Jump$tart Coalition
- Columbia River Bank
- Comcast
- Comerica Bank
- Communities in Schools of Chicago
- Community Bank
- Community Bank of Oak Park River Forest
- Community Credit Counseling Services
- Community Financial Literacy Project (A program through the University of Pennsylvania)
- Consumer Credit Counseling Services of Delaware Valley
- Consumer Financial Protection Bureau (CFPB)
- CoreLogic
- Credit Solutions
- Credit Suisse
- Credit Union of Atlanta
- Credit Union of Georgia
- CricKet Wireless
- CSOSA