GS 1, GS1, GS-1, GS.1, may refer to:
Transportation and vehicular 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 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 GS-I [Cellulose synthase (UDP-forming)], an enzyme Yamaha GS-1, the first commercially released FM digital synthesizer, in 1980
See also
GS (disambiguation) GSI (disambiguation) GSL (disambiguation)