PSSO
| Acronym | Definition |
|---|---|
| PSSO | Pass the Slipped Stitch Over (the knit stitch) |
| PSSO | Police Skills and Standards Organisation (UK) |
| PSSO | Pale Sulfonated Shale Oil (medical treatment) |
| PSSO | Property Seizure and Sale Order (Australia) |
| PSSO | Purchasing, Safety and Security Office (National University of Singapore; Kent Ridge, Singapore) |
| PSSO | Pain Syndrome of Spinal Origin (biomedicine) |