| Abbreviation | Definition |
|---|---|
| CIAS | Canadian Immigration Assistance Services |
| CIC | Citizenship and Immigration Canada (superseded by IRCC) |
| CIEP | Comparative Immigrant Entrepreneurship Project |
| CIES | Canada Immigration and Education Services |
| CIIC | Coalition of Irish Immigration Centers |
| CIIF | California Investment Immigration Fund |
| CIII | California Immigrant Integration Initiative |
| CIIP | Canadian Immigrant Integration Program |
| CIIP | Comparative Immigration And Integration Program |
| CILC | Community Immigration Law Center |
| CILC | Community Immigration Law Clinic |
| CILF | Corporate Immigration Law Firm |
| CILS | Children of Immigrants Longitudinal Study |
| CIOP | Comparative Immigrant Organization Project |
| CIOP | Comparative Immigrant Organizations Project |
| CIPC | California Immigrant Policy Center |
| CIPE | Centre for Immigration Policy Evaluation |
| CIQ | Customs Immigration and Quarantine |
| CIQS | Custom Immigration Quarantine and Security |
| CIQS | Customs Immigration Quarantine and Security |