GSR
- Acura Integra GS-R
- Galvanic skin response
- Gas Safe Register
- General Service Respirator
- Gerber Scout Reservation
- Global Sea Mineral Resources
- Glutathione-disulfide reductase
- Gondal State Railway
- Grammata Serica Recensa
- Grand Sierra Resort
- Great Sandhills Railway
- Great Southern Railway (disambiguation)
- Great Southern Railways
- Greenville Swamp Rabbits
- Groupe Scolaire La Résidence
- Gunshot residue
- Għasri
- Qardho Airport
- SIG Sauer GSR