| PSA | Potentiometric Stripping Analysis | - | Computer Acronyms(common) |
| PSA | Pressure Sensitive Adhesive | - | Computer Acronyms(common) |
| PSA | Pressure Swing Adsorption (gaseous Waste Treatment) | - | Computer Acronyms(common) |
| PSA | Prostate-specific Antigen | - | Computer Acronyms(common) |
| PSA | Prostate Specific Antigen | - | Medical(slang) |
| PSA | Prostate Check | - | Medical(slang) |
| PSA | Payload Service Area | - | Organizations |
| PSA | Payload Support Avionics | - | Organizations |
| PSA | PowerServoAssembly | - | Organizations |
| PSA | Power Servo Am Pl If Ier | - | Organizations |
| PSA | Pre/Post Sleep Activity | - | Organizations |
| PSA | Preferred StorageArea | - | Organizations |
| PSA | Pressure Switch Assembly | - | Organizations |
| PSA | Provisions Stowage Assembly | - | Organizations |
| PSA | Public Service Announcement | - | ISO Country Codes |
| PSA | Paralysis Society Of America - Pharmaceutical Society Of Australia - Pressure-Sensitive Adhesive - Production Services Association - Prostate Specific Antigen - Public Service Announcement - Public Service Association | - | Astronomy |
| PSA | Pressure Switch Assembly | - | Business and Finance |
| PSA | Problem Statement Analyzer | - | Business and Finance |
| PSA | Public Service Announcement (radio/TV Term) | - | Business and Finance |
