Wikipedia
QSR
QSR may refer to:
- Quick service restaurants, also known as fast food restaurants
- Restaurant Brands International, which trades under the symbol QSR
- Quasar, Quasi-Stellar Radio-source
- IATA airport code for Salerno Costa d'Amalfi Airport
- Quality System Regulation, U.S. Food and Drug Administration regulations requiring manufacturers to implement and follow quality systems
- QSR International, Melbourne-based software developer specialising in qualitative research software
- Q codes for amateur radio