| Abbreviation | Definition |
|---|---|
| ICLX | Intercoastal Leasing |
| ICLX | Intercoastal Leasing Incorporated |
| ICLZ | International Chassis Leasing |
| ICLZ | International Chassis Leasing Incorporated |
| ICMU | Interox America |
| ICMX | Illinois Cereal Mills |
| ICMX | Illinois Cereal Mills Incorporated |
| ICMZ | International Mineral Chemical |
| ICOU | Japan Line |
| ICOU | Japan Line Limited |
| ICOZ | Intermodal Container Transfer |
| ICPU | Intermodal Container Pool |
| ICPU | Intermodal Container Pool Inc |
| ICPZ | Intermodal Container Pool |
| ICPZ | Intermodal Container Pool Inc |
| ICRK | Indian Creek Railroad |
| ICRK | Indian Creek Railroad Company |
| ICRU | Ingetra |
| ICRU | Ingetra AG |
| ICRX | Island Creek Coal |