GHG

GHG or ghg may stand for:

General Healthcare Group, a British healthcare company
George H. Goble (also known as "ghg"), staff member at Purdue University
Greenhouse gas, a gas that absorbs and emits radiant energy at thermal infrared wavelengths, causing the greenhouse effect
Gruppenhorchgerät, a hydrophone array which was used on Nazi Germany's U-boats
Marshfield Municipal Airport (Massachusetts) (FAA LID: GHG), a public airport located east of the central business district of Marshfield