| Abbreviation | Definition |
|---|---|
| IIEC | Intermodal Interchange Executive Committee |
| IIRC | International Intersociety Researc Committee |
| ILCC | Independent Living Coordinators Committee |
| ILPIC | Industrial Licensing Policy Inquiry Committee |
| ILSAC | International Lubricant Standardization and Approval Committee |
| ILSAC | International Lubricant Standards Acceptance Committee |
| ILSAC | International Lubricants Standardisation and Approval Committee |
| ILSAC | International Lubricants Standardization and Approval Committee |
| ILSAC | International Lubricants Standardization Approval Committee |
| IMPAC | Indiana Medical Political Action Committee |
| INCID | Indian National Committee On Irrigation And Drainage |
| INCID | Indian National Committee on Irrigation Drainage |
| INEC | Independent national Election committee |
| INWC | International Niagara Working Committee |
| IOC | Independent Oversight Committee |
| IOC | International Olympic Committee's |
| IOC | International Ornithological Committee |
| IOOC | Interagency Ocean Observation Committee |
| IPC | Institutional Priorities Committee |
| IPIC | Interagency Plan Implementation Committee |