| Abbreviation | Definition |
|---|---|
| IPMA | International Project Management Association |
| IPMS | Iowa Podiatric Medical Society |
| IPN | Independent Practitioners Network |
| IPNG | Idea Processing Nigeria |
| IPNG | Index of Professional Nursing Governance |
| IPPA | International Photoacoustic and Photothermal Association |
| IPPIA | International Plasma Products Industry Association |
| IPPIC | International Paint and Printing Ink Council |
| IPQN | Société d’Investissement Premières Nations du Québec |
| IPQN | Société dInvestissement Premières Nations du Québec |
| IPRO | Independent Pharmaceutical Research Organization |
| IPS | Institute of Professional Sound |
| IPSA | Independent Professional Seed Association |
| IPSEA | Independent Parental Special Education Advice |
| IPWC | Insurance Professionals of Weld County |
| IPWEA | Institute of Public Works Engineering Australasia |
| IQA | Institute of Quality Assurance |
| IRA | Image Repetition Association |
| IRA | Irish Rifle Association |
| IRA | The Irish Racing Association |