| Abbreviation | Definition |
|---|---|
| ITAR | Interstate Transportation in Aid of Racketeering |
| ITOM | Interstate Transportation of Obscene Matter |
| ITSMV | Interstate Transportation of Stolen Motor Vehicles |
| ITSP | Interstate Transportation of Stolen Property |
| JDET | Joint Drug Enforcement Team |
| JK | Jacksonville Field Office |
| JN | Jackson Field Office |
| KBE | Key Black Extremist |
| KC | Kansas City Field Office |
| KG | Key Generator |
| KGB | Komitet Gosudarstvennoy Bezopasnosti |
| KNWR | Kodiak National Wildlife Refuge |
| KX | Knoxville Field Office |
| LA | Los Angeles Field Office |
| LCN | La Cosa Nostra |
| LD | LeaD |
| LDSK | Long Distance Serial Killer |
| LEAA | Law Enforcement Assistance Administration |
| LEGAT | Legal Attache |
| LEIU | Law Enforcement Intelligence Unit |