SG may stand for:

• The IATA code for Jetsgo
• Snow Grains (METAR Code)
• Symbol grounding (cognition and artificial intelligence)
• Canton of St. Gallen (Switzerland)
• Sábado Gigante, a Chilean TV show
• Seaborgium (Sg)
• Singapore, ISO 3166-1 alpha-2 country code
• South Georgia
• Solicitor General
• Société Générale, a bank
• Gibson SG (solid guitar), an electric guitar
• Space Ghost
• specific gravity
• Singer
• Song
• Spice Girls
• Stargate
• SG team
• Shotgun
• Straż Graniczna, Polish border guard formation
• Sugar
• SuicideGirls
• Standard Grade, a Scottish certificate of education, roughly equivalent to the English GCSE
• SG postal area, around Stevenage, England
• Shy Guy, a video game character

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