| Instituto Particular Abdon Calderon | Academic & Science |
| Intellectual Property Advisory Committee | Business |
| Industrial Partnerships And Commercialization | Business |
| Industrial and Professional Advisory Council | Business |
| Immunization Practices Advisory Committee | Business |
| Investment Performance and Accountability Commitment | Business |
| International Parent Advisory Council | Business |
| Indian Policy Advisory Committee | Business |
| Interagency Prevention Advisory Council | Business |
| Interventional Procedures Advisory Committee | Business |
| Integrated Package Assembly | Business |
| Institute of Public Administration of Canada | Business |
| International Particle Accelerator Conference | Community |
| Ingram Park Auto Center | Community |
| Indio Performing Arts Center | Community |
| Institutional Program Assessment Committee | Community |
| Infrared Processing and Analysis Center | General |
| Information Policy and Access Center | General |
| Integrating Professionals for Appalachian Children | General |
| Intragovernmental Payment and Collections | General |
| Installation Personnel Administration Center | General |
| Interdisciplinary Programs and Activities Center | General |
| Instillation Personnel Administration Center | General |
| Individual Peer Assessed Contribution | General |
| Iraq Peace Action Coalition | General |
| Independent Provider Assistance Center | General |
| Information and Personal Assistance Center | General |
| Information Policy Access Center | General |
| Incentive Plan Analytics Calculator | General |
| I Plan Activate and Complete | General |
| International Petroleum Products and Additives Company | General |
| International Packaging of Authentic Cuisine | General |
| Intra-governmental Payment and Collection System | Governmental |
| Information Planning and Conservation | Governmental |
| International Personnel Assessment Council | Governmental |
| Intellectual Property Awareness Center | Governmental |
| Industry and Professional Advisory Council | Governmental |
| Issues Political Action Committee | Governmental |
| International Pharmaceutical Aerosol Consortium | International |
| International Plus, Advanced & Challenge | International |
| International Peer Advisory Council | International |
| Internet Public Access Catalog | Internet |
| Inova Psychiatric Assessment Center | Medical |
| Inovas Psychiatric Assessment Center | Medical |
| Infection Prevention And Control | Medical |
| Internet Public Access Catalogue | Networking |