| Abbreviation | Definition |
|---|---|
| IVTEC | Intelligent Variable Valve Timing and Lift Electronic Control |
| IVTS | Intelligent Vehicle Tracking System |
| IVTS | Intelligent Vehicle tracking systems |
| IVU | In Vehicle Unit |
| IVU | In Vehicle Units |
| IVV | Ideal Vehicle Valuation |
| IWR | Internationale Wagenliste für Reisezüge |
| IWT | Inland Water Transportation department |
| IWTET | Inland Waterway Transportation Education Training |
| IWTPRRTMS | Integated Wireless and Traffic Platform for Real-time Road Traffic Management Solution |
| J | Jacked |
| J2P | Jaurès-Pantin-Petit |
| JAF | Japan Automobile Federation |
| JAFZA | Jebel Ali Free Zone Authority |
| JANET | Joint Air Network for Employ Transportation |
| JAP | Jelgavas Autobusu Parks |
| JAR | Joint Aeronautical Regulation |
| JAR | Joint Airworthiness Requirements |
| JAR | Joint Aviation Requirement |
| JATA | Jackson Area Transportation Authority |