| Abbreviation | Definition |
|---|---|
| JUTC | Jamaica Urban Transit Company |
| JVE | Japanese Vehicle Export |
| JVLR | Jogeshwari – Vikhroli Link Road |
| JVMF | Joint Vehicle Maintenance Facility |
| JVO | Johan Van Oldenbarnevelt (ship) |
| KAAA | Kansas Agricultural Aviation Association |
| KAAOT | Khor al-Amaya Oil Terminal |
| KAF | Kandahar Airfield |
| KAL | Korean Air Lines |
| KASI | Kingman Airline Services Inc |
| KAT | Kendall Area Transit |
| KAT | Knoxville Area Transit |
| KATS | Kalamazoo Area Transportation Study |
| KATV | Kassbohrer All Terrain Vehicles |
| KBB | Kawasaki Banzai Boys |
| KBT | Kentuckians for Better Transportation |
| KCI | Kansas City International Airport |
| KCIA | King County International Airport |
| KCR | Kowloon Canton Railway |
| KCR | Kowloon-Canton Railway |