PSG

PSG is a three letter acronym which may stand for:

Firearms:
* "Prickskyttegevär", Swedish for sniper rifle, see PSG-90
* "Präzisions-Scharfschützen-Gewehr", a German sniper rifle, see PSG-1

Places:
* Petersburg James A. Johnson Airport, Alaska, which has the three letter IATA code
* Princes Street Gardens Edinburgh, Scotland

Groups/Organizations:
* Pacific Seabird Group
* Pagan Spirit Gathering
* Paris Saint-Germain football (soccer) club
* Paris Saint Germain, a now-defunct rugby league club
* Parkinson Study Group
* Guianese Socialist Party
* Partei für Soziale Gleichheit
* Pattern signal generator
* Patti Smith Group, a band
* Pharmaceutical Sciences Group
* PSG College of Technology
* PSG Group of South Africa
* Professional Services Group India
* Professional Services Group NJ-DOL
* Presidential Security Group
* Peregian Skateboarding Group

Things and Concepts:
* Phosphosilicate glass
* Phrase structure grammar
* Polysomnography
* Pulsed signal generator
* Pure steam generator
* Personal System GroupWhen 'P' means Programmable:
* Programmable signal generator
* Programmable Sound Generator (PSG)
* Progressively-sectioned graphics (image format)
* Programming system generator