| Acronym | Definition |
|---|
| IAPS | International Affective Picture System |
| IAPS | International Association of Physics Students |
| IAPS | International Association for People-Environment Studies |
| IAPS | Incorporated Association of Preparatory Schools (UK) |
| IAPS | International Auditing Practice Statement |
| IAPS | Integrated Accounts Payable System |
| IAPS | Institute for Advanced Professional Studies (Boston, MA) |
| IAPS | International Airsoft Practical Shooting |
| IAPS | Indian Association of Pediatric Surgeons |
| IAPS | Integrated Avionics Processor System |
| IAPS | International Association of Patristics Studies |
| IAPS | Ion Auxiliary Propulsion System |
| IAPS | International Academy of Public Safety (Woodbridge, VA) |
| IAPS | ITCT 2k2 Automatic Processing System |
| IAPS | Improved Awards Processing System (USMC) |
| IAPS | Institute of Applied Plasma Science (Japan) |
| IAPS | International Asperger Parent Support (Singapore) |
| IAPS | Introduction to Anthropology, Psychology and Sociology (education) |