| Iowa Central Community College | Academic & Science |
| Imperial College Canoe Club | Academic & Science |
| Imperial College Caving Club | Academic & Science |
| Imperial College Chamber Choir | Academic & Science |
| Infantry Captains Career Course | Business |
| Immucell Corporation | Business |
| International Communication of Chinese Culture | Community |
| International Communion of Charismatic Churches | Community |
| International Common Criteria Conference | Community |
| International Center for a Culture of Compassion | Community |
| International Council for Caring Communities | Community |
| International Conference on Computational | Community |
| International Conference on Computational Creativity | Community |
| International Council of Community Churches | Community |
| Indo-Canadian Community Centre | Community |
| International Cosmoethical Conscientiological Community | Community |
| International Convention Center Conference | Community |
| International Common Criteria Conferences | Community |
| International Conference on | Community |
| International Conference on Climate Change | Community |
| International Coleman Collectors Club | Community |
| International Computer Communication Conference | Community |
| International Christian Chamber of Commerce | Community |
| International Council for Computer Communication | Computing |
| International Conference on Cloud Computing | Computing |
| International Conference on Cognitive Computing | Computing |
| Innovative Computing and Cloud Computing | Computing |
| International Conference on Computer Communication | Computing |
| Iowa Chronic Care Consortium | General |
| Innovative Care for Chronic Conditions | General |
| Incentive Cash Cost Curve | General |
| Imperial Commissary Collectors Convention | General |
| Inter Cluster Communication Cost | General |
| Irish Camping and Caravan Club | General |
| International Council of Corvette Clubs | General |
| Inner City Capital Connections | General |
| International Conference on Coordination Chemistry | International |
| International Conference on Computer Communications | International |
| International Conference on Communications in China | International |
| International C-Class Catamaran Championship | International |
| International Council of Christian Churches | International |
| Internet Customer Care Center | Internet |
| International Classification of Childhood Cancer | Medical |
| In Country Clinical Caretaker | Medical |
| Indo Canada Chamber of Commerce | Regional |
| Indo Canada Chambers of Commerce | Regional |
