| IICC | Illinois Interagency Coordinating Council 
| Others |
| IICC | Immigrant Integration Coordinating Committee
| Others |
| IICC | Innovation and interdisciplinary collaboration community
| Others |
| IICC | Institute for Information on the Crimes of Communism
| Others |
| IICC | Institute for International Christian Communication
| Others |
| IICC | Institutional Investors Consulting Company
| Others |
| IICC | International Incidence of Childhood Cancer
| Others |
| IICC | International Industrial Contracting Corporation
| Others |
| IICC | Interstate Informed Citizens Coalition
| Others |
| IICC | IVD Industry Connectivity Consortium
| Others |