GHG

THG stands for:

an Italian DJ and music producer, see Takagi & Ketra
Tetrahydrogestrinone , a designer steroid
Theodor-Heuss-Gymnasium , a variety of high schools with the name
Third harmonic generation , see frequency doubling
Thoracic , cardiac and vascular surgery , sub-areas of surgery
Tom's Hardware Guide , a well-known online magazine for computer technology with its own test laboratories
Transport helicopter squadron (Air Force of the NVA)
Greenhouse gas , the German translation of the English GHG, Green House Gases
Theo Hespers Comprehensive School Mönchengladbach

ThG is an abbreviation for: