PSSN
| Acronym | Definition |
|---|---|
| PSSN | Pre-Sidedress Soil Nitrate |
| PSSN | Portage Senior Service Network (Ohio) |
| PSSN | Personnel Specialist Seaman (USN Rating) |
| PSSN | Pocket-Sized Spiral Notebook |
| PSSN | Plasma Science Society of Nepal |
| PSSN | Penn State Sports Network (radio) |
| PSSN | Power Section Serial Number (turboprop aircraft engine) |