SG

sg is the ISO 3616 country code for Singapore.

SG or sg may also stand for:

In computing and internet:
* Sega Genesis, a game console
* .sg, the top-level domain of Singapore
* SuicideGirls, a softcore goth website
* SuperGroup, a concept in City of Heroes, the equivalent of 'guilds' or 'clans'.

In education:
* Saint Gabriel's College, private school in Bangkok, Thailand
* Standard Grade, a Scottish certificate of education, roughly equivalent to the English GCSE
* Second Grade
* Sixth Grade
* Seventh Grade

In entertainment:
* Sábado Gigante, a Chilean TV show
* SG team, fictional military team in Stargate
* Shy Guy, video game character
* Space Ghost, ficitional character and comic books
* Stargate, science fiction franchise
* Studio Ghibli, a Japanese animated film company
* Stewie Griffin, a character on Family Guy voiced by Seth MacFarlane

In music:
* Gibson SG (solid guitar), an electric guitar
* Soundgarden, a seminal 90s grunge band.
* Spice Girls, a British pop grop
* SG Wannabe, a Korean music group

In people:
* Samir Geagea, Lebanese politician and a former political prisoner
* Selena Gomez, American actress

In places:
* Canton of St. Gallen, Switzerland
* Singapore, ISO 3166-1 alpha-2 country code
* South Georgia, British overseas territory
* SG postal area, around Stevenage, England
* Sunken Gardens, in Williamsburg, Virginia

In science:
* Seaborgium, the chemical symbol Sg
* Snow Grains (METAR Code)
* Specific gravity, density ratio of substance compared with water
* Stern–Gerlach experiment, 1922 quantum mechanics particle deflection experiment
* Symbol grounding cognition and artificial intelligence

In sports:
* Shooting guard, basketball position
* Stade Gabèsien, a football club from Gabès, Tunisia
* Super G, short for Super Giant Slalom skiing, a discipline of slalom skiing

In transportion:
* Jetsgo, IATA code SG
* Standard Gauge for railways (4' 8½" or 1435mm)

In miscellaneous:
* Sango language, ISO 639-1 code
* Secretary General, organisation and communist party title
* Shotgun abbreviation and buckshot size
* Simpson Grierson, New Zealand law firm
* Société Générale, European financial services company
* Solicitor General, government's legal advocate
* Star of Gallantry, Australian gallantry decoration
* Straż Graniczna, Polish border guard formation