| IPIR | Immediate Post Injection Reaction 
| Others |
| IPIR | Initial Phase Interpretation Report
| Others |
| IPIR | Initial Photo Interpretation Report
| Others |
| IPIR | Initial Pollution Incident Report
| Others |
| IPIR | Instituto de Psicoterapia Integrativa Relacional
| Others |
| IPIR | Intercostal To Phrenic Inhibitory Reflex
| Others |
| IPIR | Internationale Politik und Internationales Recht
| Others |
| IPIR | Intervention Planning Intel Report
| Others |
| IPIR | Introduction to Politics and International Relations
| Others |