GSP
- EBay
- GS Pétroliers (basketball)
- GS Pétroliers (handball)
- GSP Stadium
- Gambrill State Park
- Garden State Parkway
- Garden State Plaza
- Garner State Park
- Garrapata State Park
- Gathland State Park
- Gazeta Sporturilor
- Genealogical Society of Pennsylvania
- General Samaj Party
- Generalized System of Preferences
- Generalized second-price auction
- Geneva State Park
- Geological Survey of Pakistan
- George Street Playhouse
- Georges St-Pierre
- Georgia State Patrol
- Georgia State Prison
- German Shorthaired Pointer
- Gibraltar Services Police
- Girl Scouts of the Philippines
- Glory Sound Prep
- Good safety practice
- Greenville–Spartanburg International Airport
- Gross state product
- Grup Servicii Petroliere
- Guardian Service Processor
- Guatemala Stove Project
- Gurdaspur railway station
- Kentucky Governor's Scholars Program
- PT-76
- Samsung Global Scholarship Program
- The Geometer's Sketchpad
- Walther GSP
- Wasembo language