PCAS may refer to:
- Palomar Planet-Crossing Asteroid Survey, astronomical survey
- Patient-controlled analgesia methods
- Persistent Close Air Support
- Personal Carbon Allowances, a concept in Personal carbon trading
- Polytechnics Central Admissions System
- Portable Collision Avoidance System
- Postgraduate Certificate in Antarctic Studies at University of Canterbury
- Post-Cardiac Arrest Syndrome
This disambiguation page lists articles associated with the title PCAS.
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