| Acronym | Sense | Language | Topics |
|---|---|---|---|
| PCA | Popular Culture Association | In English | → Associations → Civilization, culture, progress |
| PCA | Programme Commun d'Activités | In French | → Management |
| PCA | Performance Coverage Analyzer | In English | |
| PCA | Physical Configuration Audit | In English | |
| PCA | Pitch Control Assembly | In English | |
| PCA | Pneumatic Control Assembly | In English | |
| PCA | Point of Closest Approach | In English | |
| PCA | Polar Cap Absorption | In English | → Earth sciences |
| PCA | Power Conditioning Assembly | In English | → Electrical engineering |
| PCA | Power Controller Assembly | In English | → Electrical engineering |
| PCA | Production Configuration Audit | In English | |
| PCA | Portland Cement Association | In English | → Associations → Construction |
| PCA | Peugeot Citroën Automobiles | In French | → Automobile manufacturing |
| PCA | Polskie Centrum Aluminium (http://pca.org.pl) | In Polish | → Research institutes → Metallurgy → Poland |
| PCA | Plan Comptable Analytique | In French | → Accounting |
| PCA | Principal Component Analysis | In English | → Mathematics → Statistics |
| PCA | Patient Controlled Analgesy | In English | → Medicine |