| Acronym | Definition |
|---|
| IPSA | International Political Science Association |
| IPSA | Independent Parliamentary Standards Authority (UK) |
| IPSA | International Political Science Abstracts |
| IPSA | Institut Polytechnique des Sciences Avancées (Paris, France) |
| IPSA | International Professional Security Association (UK) |
| IPSA | International Professional Security Association |
| IPSA | Institut Polytechnique des Sciences Avancees (France) |
| IPSA | Institute for Psychological Study of the Arts |
| IPSA | International Process Servers Association |
| IPSA | Independent Professional Seed Association |
| IPSA | Initial Poverty and Social Assessment |
| IPSA | Independent Postal System of America |
| IPSA | International Pin Shooting Association |
| IPSA | Irish Practical Shooting Association |
| IPSA | International Policy Student Association |
| IPSA | Institute of Packaging South Africa |
| IPSA | Institute of Professionals in Specialty Advertising |
| IPSA | Instituto de Previsión Social del Artista (Spanish, Guatemala) |
| IPSA | Irish Piebald & Skewbald Association |
| IPSA | Industrial Police and Security Association |
| IPSA | Institut für Pychosoziale Aufgaben |
| IPSA | Inverse Planning by Simulated Annealing (algorithm) |
| IPSA | Interactive Power System Analysis |
| IPSA | Indorsement to Project Support Agreement |