| Acronym | Definition |
|---|
| CCIN➣Castello Cities Internet Network (websites) |
| CCIN➣Canadian Cryospheric Information Network |
| CCIN➣Chronic Conditions Information Network |
| CCIN➣Chernobyl Children in Need |
| CCIN➣Custom Card Identification Number |
| CCIN➣Conjunctival-Corneal Intraepithelial Neoplasia (ophthalmology) |