| PCA | Preliminary Consequence Analysis | - | Computer Acronyms(common) |
| PCA | Polar Cap Absorption | - | Computer Acronyms(common) |
| PCA | Principal Component Analysis | - | Computer Acronyms(common) |
| PCA | Procoagulant Activity | - | Computer Acronyms(common) |
| PCA | Patient Controlled Analgesia | - | Medical(slang) |
| PCA | Pitch Control Assembly | - | Organizations |
| PCA | Pneumatic Control Assembly | - | Organizations |
| PCA | Pneumatic Control Assembly | - | Organizations |
| PCA | Point Of Closest Approach | - | Organizations |
| PCA | Power Control Assembly | - | Organizations |
| PCA | Power Controller Assembly | - | Organizations |
| PCA | Physical Configuration Audit | - | Business and Finance |
