GHG can be an abbreviation for:
- Greenhouse gas
 - George H. Goble, inventor of multi-CPU Unix systems, refrigerants, and winner of the 1996 Ig Nobel Prize in Chemistry.
 - Marshfield Municipal Airport (Massachusetts) in Marshfield, Massachusetts.
 - Gesenius' Hebrew Grammar - A grammar book of Hebrew, written by Wilhelm Gesenius.
 - General Healthcare Group - UK private healthcare group
 
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