| Abbreviation | Definition |
|---|---|
| IBC | Individual Blade Control |
| IBC | Intermediate Bulk Container |
| IBSGP | Intercity Bus Security Grant Program |
| IBT | Islwyn Borough Transport |
| IBTTA | International Bridge, Tunnel and Turnpike Association |
| IC | Import Code |
| IC | In Container |
| IC | Integrated Coach |
| IC | Inter-City |
| ICATA | International Conference on Air Transportation and Aviation |
| ICATS | Iredell County Area Transportation System |
| ICC | Intelligent Cruise Control |
| ICCO | Independent Consignment Certification Officer |
| ICCS | Independent Coordination and Certification Squad |
| ICCT | International Council on Clean Transportation |
| ICD | Inland Clearance Depot |
| ICE | In Car Entertainment |
| ICE | Integrated Cab Electronics |
| ICE | Inter-City Express |
| ICE | Internal Combustion Engine |