GS 1, GS1, GS-1, GS.1, may refer to:
Transportation and vehicular
edit- Southern Pacific class GS-1, a Southern Pacific steam locomotive class
- Glisa Stanisavljevic GS-1, a Yugoslav glider; see List of Yugoslavian gliders
- Curtiss GS-1, a WW1 U.S. Navy scout triplane
- Blue Origin New Glenn first stage, space launch rocket booster stage
Groups, organizations
edit- GS1, a not-for-profit international organization for barcode standards
- Gustav Siegfried Eins (station code "GS1"), a British black propaganda radio station during World War II
- Tatmadaw GS-1, the training and operations branch of the Myanmar Armed Forces
Other uses
edit- GS-I [Cellulose synthase (UDP-forming)], an enzyme
- Yamaha GS-1, the first commercially released FM digital synthesizer, in 1980