English abbreviations from hg to hh
- "Hg (Inch of Mercury)
- Hg (Mercury (Latin Hydrargyrum))
- HG-5 (Harris Gates Five radio transmitter)
- HGA (Egal International Airport)
- Hgb. (Hemoglobin)
- HGB (Hall Governing Board)
- HGC (UK Human Genetics Commission)
- HGD (Hughenden Airport)
- HGE (Heavy Gold Electroplate)
- HGF (Human Growth Factor)
- HGFTI (Harold Grinspoon Foundation Teen Initiative)
- HGG (Hermantown Girls Group)
- HGH (Hangzhou Xiaoshan International Airport)
- HGL (Düne Airport (Helgoland Airport))
- HGN (Mae Hong Son Airport)
- HGO (Korhogo Airport)
- HGR (Hagerstown Regional Airport (Richard A. Henson Field))
- HGS (High (Specific-)Gravity Solids)
- HGSE (Harvard Graduate School of Education)
- HGSS (Hellfire Ground Support System)
- HGST (Helicopter Gunnery Skill Test)
- HGT (Tusi Army Heliport)
- HGTTG (Hitchhikers Guide To The Galaxy)
- HGTV (Home & Garden Television)
- HGU (Mount Hagen Airport)
- HGZ (Hog River Airport (FAA: 2AK6))
- HH ((celestial object) Herbig-Haro object, objects formed when the ejecta from new stars collides with the interstellar medium)