HSG may refer to:

Medicine

• Hysterosalpingography, X-ray of the uterus and fallopian tubes

Transportation

Air

• Hawker Siddeley Group, a former British aircraft manufacturer
• Hesnes Air, a Norwegian airline
• Saga Airport, in Japan

Railway

• BNR class HSG, a class of locomotives
• High-speed grinding, a method of maintaining railway track
• Hira Singh railway station, in Pakistan
• Hathersage railway station, England

Other

• Handling stolen goods
• Haringey Solidarity Group
• High School for the Gifted, in Ho Chi Minh City, Vietnam
• High Sierra Group, creators of the High Sierra Format CD-ROM filesystem
• University of St. Gallen, in Switzerland

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