| Acronym | Definition |
|---|
| IIC | Inter-American Investment Corporation |
| IIC | ILAS (International Linear Algebra Society) Information Center |
| IIC | Impact Insulation Class (construction) |
| IIC | International Institute for Conservation (of Historic and Artistic Works) |
| IIC | Independent Inquiry Committee |
| IIC | Investigator-In-Charge |
| IIC | International Institute of Communications |
| IIC | Inter Integrated Circuit |
| IIC | Idaho Industrial Commission |
| IIC | Islamic Information Center (various organizations) |
| IIC | International Import Certificate |
| IIC | Intercultural Institute of California (San Francisco, CA) |
| IIC | Integrated Circuit Card |
| IIC | Implementation, Interoperability and Conformance |
| IIC | Institution Identification Codes |
| IIC | International Internet Connectivity |
| IIC | International Insurance Council |
| IIC | Infranet Initiative Council |
| IIC | Integrated Information Center (various universities) |
| IIC | Iterative Interference Cancellation |
| IIC | International Index Company Ltd. (Markit Ltd. Group; Germany) |
| IIC | Indian Investment Center (New Delhi, India) |
| IIC | Iowa Institute for Cooperatives |
| IIC | International Information Center (various organizations) |
| IIC | Impersonal Interrogative Comment |
| IIC | Independent International Consultants Ltd. (water management; Durham, UK) |
| IIC | Industry Initiated Change |
| IIC | Item Identification Code |
| IIC | Initial Instrumentation Capability |
| IIC | Interactive Image Capture |
| IIC | Independent Insurance Center Inc. (Manchester, CT) |
| IIC | Israel Information Centre (Manchester, UK) |
| IIC | Iterative Interference Cancellation/Canceller |
| IIC | Institute of Informatics and Communication (India) |
| IIC | India International Centre (New Delhi, India) |
| IIC | International Interpreters Consortium |
| IIC | Inco Innovation Centre (Memorial University; Canada) |
| IIC | International Investment Company (UK) |
| IIC | International and Intercultural Communication (various organizations) |
| IIC | Information in Context (computer programming) |
| IIC | Iran Industrial Consultants Company |