| Abbreviation | Definition |
|---|---|
| CNB | Citizens National Bank |
| CNB | City National Bank |
| CNB | Community National Bank |
| CNB | Conway National Bank |
| CNB | County National Bank |
| CNB | Croatian National Bank |
| CNB | Czech National Bank |
| CNBF | City National Bank of Florida |
| CNBT | Citizens National Bank of Texas |
| CNBT | City National Bank of Taylor |
| CNGB | China National Gene Bank |
| CO | Cash Officer |
| CO | Circle Office |
| CO | Controlling Office |
| CO | Corporate Office |
| COCB | Capital One Commercial Banking |
| COF | Capital One Financial |
| Coll. | Collection |
| COPB | Code of Obligations of Panel Banks |
| CP | Check Payment |