| Abbreviation | Definition |
|---|---|
| CLETN | California Law Enforcement Telecommunications Network |
| CLFE | Certified Lead Forensics Examiner |
| CLI | Call Line Identification |
| CLO | Coroner's Liaison Officer |
| CLP | Crime Lab Project |
| CLPD | City Life Police Department |
| CLPD | Competition Law Police Debate |
| CM | Court- Martialled |
| CMA | Crime Makers of America |
| CMAP | Crime Management Accountability Program |
| CMAP | Crime Mapping and Analysis Program |
| CMC | Cajun Mexican Connection |
| CMC | Crime Management Centre |
| CMG | Crenshaw Mafia Gangstas |
| CMP | Canadian Mounted Police |
| CMPA | Canadian Military Police Association |
| CMPA | Central Missouri Police Academy |
| CMPD | Charlotte Mecklenburg Police Department |
| CMPD | Charlotte-Mecklenburg Police Department |
| CMPD | Costa Mesa Police Department |