PAS
- Admiralty Yard Craft Service
- Caltech Seismological Laboratory
- Electric bicycle
- Ion Pas
- Le Pas
- List of positions filled by presidential appointment with Senate confirmation
- Malaysian Islamic Party
- Media Vision Pro AudioSpectrum
- PAS Giannina F.C.
- PAS Hamedan F.C.
- PAS Tehran F.C.
- PAS diastase stain
- PAS domain
- Pacific American School
- Pakistan Academy of Sciences
- Pakistan Administrative Service
- Pan Am Southern
- Pan American School (disambiguation)
- Pan American Silver
- Pan American Stadium (New Orleans)
- Pan American Stadium (Winnipeg)
- Pan American Stadium (disambiguation)
- Pan American Stakes
- PanAmSat
- Panic and Agoraphobia Scale
- Para-aminosalicylic acid
- Paradox Access Solutions
- Parental alienation syndrome
- Partido Alianza Social
- Party of Action and Solidarity
- Pas (river)
- Pascal programming language
- Patient administration system
- Penteli Astronomical Station
- Percussive Arts Society
- Periodic acid-Schiff stain
- Personal Access System
- Petroleum Air Services
- Physician-assisted suicide
- Poetry Association of Scotland
- Polish Academy of Sciences
- Portable Antiquities Scheme
- Positron annihilation spectroscopy
- Post-abortion syndrome
- Process automation system
- Production Automotive Services
- Publicly Available Specification
- Sihanoukville Autonomous Port
- The Pas
- The Pas (electoral district)