| Insurance Premium Payment Assistance | Business |
| International Photoacoustic and Photothermal Association | Business |
| International Public Policy Analyst | Business |
| Indianhead Professional Photographers Association | Community |
| Independent Programme Producers Association | Community |
| Indiana Pork Producers Association | Community |
| Iowa Public Procurement Association | Community |
| Illinois Press Photographers Association | Community |
| Illinois Pork Producers Association | Community |
| Iowa Pork Producers Association | Community |
| Idaho Public Purchasing Association | Community |
| Independent Payroll Providers Association | Community |
| Internet Professional Publishers Association | Computing |
| Inspection Palpation Percussion Auscultation | General |
| improved Physarum polycephalum algorithm | General |
| Irish Professional Photographers Association | General |
| Indo-Pacific Prehistory Association | General |
| Identification of Potential Protected Areas | General |
| Inspection Palpation Percussion Ausculation | General |
| Iowa Public Procurement Assn | General |
| Inspection Palpation Percussion and Auscultation | General |
| International Private Practitioners Association | Governmental |
| Intellectual Property Protection Act | Governmental |
| Institute of Public Policy and Administration | Governmental |
| International Pakistan Prestige Awards | International |
| Indonesian Planned Parenthood Association | International |
| International Paediatric Pathology Association | International |
| International Pectin Producers Association | International |
| International Public Policy Association | International |
| International Positive Psychology Association | International |
| Insurance Policyholder and Patient Association | Medical |
