| Abbreviation | Definition |
|---|---|
| IRWC | Irish Ramsar Wetlands Committee |
| ISAC | International Survivors Action Committee |
| ISC | Interagency Security Committee |
| ISDC | Interagency Suspension and Debarment Committee |
| ISDSC | Inter-State Defence and Security Committee (South Africa) |
| ISFC | Irish Specimen Fish Committee |
| ITC | Inland Transport Committee |
| ITOC | Idaho Training Oversight Committee |
| ITOC | Independent Taxpay Oversight Committee |
| ITOC | Independent Taxpayer Oversight Committee |
| ITOC | Independent Taxpayer Oversight Committees |
| ITOC | Information Trends and Opportunities Committee |
| ITPC | Identity Theft Protection Committee |
| ITPC | Irish Tractor Pulling Committee |
| ITRCC | Illinois Traffic Records Coordinating Committee |
| IUBC | Inter Unit Benefits Committee |
| IWOC | Incarcerated Workers Organising Committee |
| IYC | International Youth Committee |
| JAC | Joint Advisory Committee |
| JAC | Joint Allocation Committee |