| CCIN | Canadian Cryospheric Information Network 
| Others |
| CCIN | Capital Clinical Integrated Network
| Others |
| CCIN | Castello Cities Internet Network
| Others |
| CCIN | Castello Cities Internet Network, Inc.
| Others |
| CCIN | Centre for Community and Industry Network
| Others |
| CCIN | Chernobyl Children in Need
| Others |
| CCIN | Chronic Conditions Information Network
| Others |
| CCIN | Commission de controle des informations nominatives
| Others |
| CCIN | Cooperative Councils Innovation Network
| Others |
| CCIN | Corporate Community Investment Network
| Others |
| CCIN | Corporate Creditor Identification Number
| Others |
| CCIN | Criminal Code Infringement Notices
| Others |
| CCIN | Custom Card Identification Number
| Others |