| Inter Community Telephone Company | Business |
| Inland Cargo Transfer Company | Business |
| Irish Classical Theatre Company | Business |
| Informatics Communications Technology Complex | Computing |
| Indiana County Technology Center | Computing |
| Information and Communication Technology Convergence | Computing |
| Information and Communications Technology Council | Computing |
| Informatics and Communications Technology Complex | Computing |
| Indian Capital Technology Center | Computing |
| International Coalition for Trachoma Control | General |
| Integrated Counselling and Testing Centre | General |
| Integrated counseling and testing centre | General |
| International Coalition | General |
| International Create a Town Contest | General |
| Integrated Counseling and Testing Center | General |
| Isuzu Commercial Truck of Canada | General |
| Inner City Teaching Corps | General |
| Institute for Catholic Thought and Culture | Governmental |
| Imperial County Transportation Commission | Governmental |
| Information and Communication Technology Council | Governmental |
| Isabella County Transportation Commission | Governmental |
| Inertial Components Temperature Controller | Governmental |
| Interstate Clean Transportation Corridor | Governmental |
| International Center for Traditional Childbearing | International |
| International Center for Traditional Childbirth | Medical |
| Inter County Training Consortium | Regional |
| Immunization Collaboration of Tarrant County | Regional |
| Inner City Tennis Clinics | Sports |
