| Intercollegiate Center for Classical Studies | Academic & Science |
| International Clinical Cytometry Society | Academic & Science |
| International Children's Continence Society | Academic & Science |
| Conseil international d'études canadiennes | Academic & Science |
| International Council for Canadian Studies | Academic & Science |
| Intelligent Career Card Sort | Business |
| International Coin Certification Service | Business |
| Implementing College and Career Standards | Business |
| International Conference on Computational Science | Community |
| Indiana Cyber Charter School | Community |
| Intervention Community Corrections Services | Community |
| Immaculate Conception Cathedral School | Community |
| International Conference on Chemical Structures | Community |
| Illinois Coalition for Community Services | Community |
| International Conference on Cyber Security | Community |
| International Conference on Climate Services | Community |
| International Conferences on Conceptual Structures | Community |
| Immaculate Conception Catholic School | Community |
| International Center for Computational Science | Computing |
| Interaction Center Core Specialist | General |
| International Commission of Control and Supervision | General |
| Implementing the Common Core Standards | General |
| Interstate Contract Cleaning Services | General |
| Intelligent Cruise Control System | General |
| Island Crossing Counseling Services | General |
| Integrated Chassis Control System | General |
| In Car Communication Systems | General |
| International Coastal Cleanup Singapore | General |
| International Center for Communication Studies | General |
| Intelligent Control and Command Systems | General |
| Impressions Clicks Conversions and Spend | General |
| Intercollegiate Center for Classic Studies | General |
| International Commision for Control and Supervision | Governmental |
| International Civic and Citizenship Study | Governmental |
| Institute of Communication and Computer Systems | Governmental |
| Institute for Community Collaborative Studies | Governmental |
| Interior Communications Electrician Senior Chief Petty Officer | Governmental |
| Institute for Creative Civil Strategies | Governmental |
| Independent Coordination and Certification Squad | Governmental |
| International Customer Care Services | International |
| International Conference on Complex Systems | International |
| International Commission on Civil Status | International |
| International Catholic Conference of Scouting | International |
| International Conference On City Sciences | International |
| International Content Certification Standard | Internet |
| International Cancer Cluster Showcase | Medical |
