| IPI | i-Predator Probability Inventory 
| Others |
| IPI | Ikatan Pemuda Indonesia
| Others |
| IPI | Illumination Publishers International
| Others |
| IPI | Image Permanence Institute
| Others |
| IPI | Image Processing and Interchange
| Others |
| IPI | Impressive Products, Inc.
| Others |
| IPI | In Process Inspection
| Others |
| IPI | Income Protection Insurance
| Others |
| IPI | Independent Photo Imagers
| Others |
| IPI | Indian Plastics Institute
| Others |
| IPI | Indigenous Populations and Institutions
| Others |
| IPI | Individual Programmed Instruction
| Others |
| IPI | Initial Protocol Identifier
| Others |
| IPI | Inputs Process Image
| Others |
| IPI | Institute for Policy Innovation
| Others |
| IPI | Institute for Private Investors
| Others |
| IPI | Instructional Practices Inventory
| Others |
| IPI | Integrated Pulmonary Index
| Others |
| IPI | Intel Product Integrator
| Others |
| IPI | Intelligent Peripheral Interface
| Others |
| IPI | Inter Processor Interrupt
| Others |
| IPI | Interactive Pipe Inspection
| Others |
| IPI | Interested Parties Information
| Others |
| IPI | Internal Packet Identifier
| Others |
| IPI | Internal Processor Interrupt
| Others |
| IPI | International Parking Institute
| Others |
| IPI | International Partnering Institute
| Others |
| IPI | International Payment Instruction
| Others |
| IPI | International Peace Institute
| Others |
| IPI | International Pharmaceutical Industry
| Others |
| IPI | International Pharmaceuticals Inc
| Others |
| IPI | International Press Institute
| Others |
| IPI | International Prognostic Index
| Others |
| IPI | International Protection Investigation
| Others |
| IPI | International Psychotherapy Institute
| Others |
| IPI | Intrepid Potash Inc
| Others |
| IPI | Investment Professionals Inc
| Others |
| IPI | Inwald Personality Inventory
| Others |
| IPI | Iowa Prison Industries
| Others |
| IPI | Ipiales, Colombia
| Others |
| IPI | Itemized Price Index
| Others |