GHG

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