| Acronym | Definition |
|---|
| PIOS➣Personen, Institutionen, Objekte, Sachen |
| PIOS➣Pew Institute for Ocean Science |
| PIOS➣Public Information and Outreach Section (Bosnia and Herzegovina) |
| PIOS➣Pinhole Illumination-Optical Sectioning (cancer research) |
| PIOS➣Personal Injuries Online Service (legal software) |
| PIOS➣Policy Implementation Overlay Services |