| PSS | Personal Social Services | - | Chatting Acronyms |
| PSS | Perturbed Stationary State | - | Computer Acronyms(common) |
| PSS | Primary Sewage Sludge | - | Computer Acronyms(common) |
| PSS | Positive Suitcase Sign - Patients Who Are Repeated Admissions For Prolonged Periods With No Physiological Cause Of Their Problems. They Turn Up At Hospital With Packed Suitcases Ready For Admission | - | NASA |
| PSS | Pad Safety Supervisor | - | Organizations |
| PSS | Payload Specialist Station | - | Organizations |
| PSS | Payload Support System | - | Organizations |
| PSS | Propellant Supply Subsystem | - | Organizations |
| PSS | Propulsion Support System | - | Organizations |
| PSS | Personnel System Support | - | Astronomy |
| PSS | Packet Switched Service
| - | Human Genome |
