SG1 commonly refers to Stargate SG-1, a television show.
SG1 may also refer to: Stargate SG-1 (roleplaying game) based on the TV show, released in 2003 SG1 (or SG/1), a version of the Heckler & Koch G3 rifle SG1, a minor planet notation indicating the thirty-third discovery in late September of a given year, see provisional designation in astronomy 1941 SG1, the asteroid 1546 Izsák 1955 SG1, the asteroid 4300 Marg Edmondson 1973 SG1, the asteroid 14792 Thyestes 1974 SG1, the asteroid 2756 Dzhangar 1987 SG1, the asteroid 6474 Choate 1989 SG1, the asteroid 7934 Sinatra 1992 SG1, the asteroid 7250 Kinoshita Scanlan SG-1, a glider Schlachtgeschwader 1, a German Luftwaffe unit during World War II SG1 postcode district, in the SG postcode area, in Stevenage in the United Kingdom
See also SGI (disambiguation) SGL (disambiguation)