| Acronym | Definition |
|---|
| CIIN➣Chemical Injury Information Network |
| CIIN➣Chartered Insurance Institute of Nigeria (professional organization) |
| CIIN➣California Integrated Information Network (California Department of General Services) |
| CIIN➣Corporate Integrated Information Network |
| CIIN➣Configuration Item Identification Number |
| CIIN➣Community Interfaith/Interagency Network (Florida) |