HSG may refer to:
Education
- High School for the Gifted, Ho Chi Minh City, Vietnam
- University of St. Gallen, Switzerland
Transport
Air
- Hawker Siddeley Group, a British aircraft manufacturer
- Hesnes Air, a Norwegian airline
- Saga Airport, Japan
Rail
- BNR class HSG, a class of locomotives
- High-speed grinding, a track maintenance method
- Hira Singh railway station, Pakistan
- Hathersage railway station, England
Other uses
- Handling stolen goods
- High Sierra Group, CD-ROM standards body
- Hysterosalpingography, X-ray of the uterus and fallopian tubes
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