HEG may refer to:

• Mount Heg, Victory Mountains, Antarctica
• Herlong Recreational Airport, Jacksonville, Florida, US (FAA LID:HEG)

• Hemoencephalography
• Homing endonuclease genes
• Homogeneous electron gas
• Host Europe Group, a web hosting company in the UK
• Hydro-erosive grinding
• Hyperemesis gravidarum, a complication of pregnancy

• Hans Christian Heg (1829–1863), Norwegian-American politician and soldier
• Helong language, spoken on Timor (ISO 639-3:heg)

This disambiguation page lists articles associated with the title HEG.
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