Organizations
- PAS Giannina, a Greek football club from Ioannina
- PAS Tehran F.C., a defunct Iranian football club from Tehran
- PAS Hamedan F.C., an Iranian football club from Hamedan
- Pakistan Academy of Sciences
- Pennsylvania Abolition Society
- Percussive Arts Society
- Pioneer Academy of Science
- Portsmouth Abbey School
- Polish Academy of Sciences
- Port Auxiliary Service, the successor to the British Admiralty Yard Craft Service
- Portable Antiquities Scheme
- Pregnancy Advisory Service
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