- Canadian Dollar
- Canadian English
- Canadian French
- Cardano
- Carletta Limited
- CartaSi
- Carte Bancaire
- Carte Bleue
- Cashback Bonus
- Cashenvoy
- Cashlib
- CashtoCode
- Caspo Ltd. Casinos
- Casumo Services Limited
- CBE
- Cellxpert
- Cheque
- Chilean Peso
- Chilean Spanish
- China Union Pay
- Chinese
- Chinese Yuan
- ClickandBuy
- Co-Gaming Limited
- Codere Online Operator Limited
- CoinsPaid
- Colombian Peso
- ComePay
- Condor Gaming
- Congolese Franc
- Continental Solutions BV Limited
- Costa Rican Colon
- credEcardplus
- Credit and Debit Cards
- Croatian
- Croatian Kuna
- Cubits
- CuentaDigital
- Cyberplay Management Ltd.
- Czech
- Czech Koruny
- Czech Republic Koruna
