| Abbreviation | Definition |
|---|---|
| IVDU | Intra-Venous Drug User |
| IVO | Immobilised Vehicle Orders |
| IWRP | Individualized Written Rehabilitation Plan |
| JACG | Joint Asian Crime Group |
| JAP | Jharkhand Armed Police |
| JAPU | Juvenile Aid Police Unit |
| JB | Just Busted |
| JBB | Joint Branch Board |
| JCAT | Joint Criminal Apprehension Team |
| JCC | Joint Central Committee |
| JCF | Jamaica Constabulary Force |
| JCPD | Jefferson City Police Department |
| JCPD | Jersey City police |
| JCPD | Jersey City Police Department |
| JCPD | Johns Creek Police Department |
| JCPD | Johnson City Police Department |
| JCPO | Juvenile Crime Prevention Office |
| JCPP | Joint Community Police Partnership |
| JCSD | Jefferson County Sheriff's Department |
| JCSO | Jackson County Sheriff's Office |