| Abbreviation | Definition |
|---|---|
| CHRC | Criminal History Records Checks |
| CHRI | Criminal History Report Information |
| CHRR | Criminal History Record Report |
| CHRT | Canadian Human Rights Tribunal |
| CHS | Chaired, Hanged, and Shot |
| CHSB | Criminal History Systems Board (Massachusetts) |
| CHUMP | Criminal Headquarters for Underworld Master Plan |
| CI | Confidential Intermediary |
| CI | Criminal Intent |
| CI | Criminal Investigation |
| CI | Crown Immunity |
| CIA | Can't Identify Anything |
| CIA | Caught In Action |
| CIA | Caught In the Act |
| CIA | Central Investigation Agency |
| CIAA | Commission for the Investigation of Abuse of Authority |
| CIAP | Court Interpreters Advisory Panel |
| CIB | Crime Identification Bureau |
| CIB | Criminal Intelligence Bureau |
| CIC | Children In Common |