ORRS
| Acronym | Definition |
|---|---|
| ORRS | Ongoing and Reviewable Resourcing Schemes (Ministry of Education; New Zealand) |
| ORRS | Organic Resource Recovery System (food waste recycling program; Organic Resouce Management, Inc.; Woodbridge, Ontario, Canada) |
| ORRS | Outer Ring Road System (Singapore) |
| ORRS | Orange River Replanning Study (South Africa) |
| ORRS | Outer Radial Reflector Surveillance |
| ORRS | Outer Retinal Rod Segments (opthamology) |