PSG is a TLA which may stand for:
- Programmable sound generator
- Programmable signal generator
- Pulsed signal generator
- Pattern signal generator
- Programming system generator
- Pure steam generator
- PSG College of Technology
- Paris Saint-Germain football club
- Pharmaceutical Sciences Group
- Professional Services Group India
- Parkinson Study Group
- Poodle Support Group
- Pacific Seabird Group