| Acronym | Definition |
|---|
| HDG | Heading |
| HDG | Haus der Geschichte (German) |
| HDG | Haut de Gamme (French: premium products) |
| HDG | Hot Dip Galvanized |
| HDG | Hydraulic Detachable Gooseneck (trailer equipment) |
| HDG | Havre de Grace |
| HDG | High Desert Gold (Canada) |
| HDG | Hound Dog Graphics (New York) |
| HDG | Homology-Dependent Gene (plant biology) |
| HDG | Highly Decomposed Granite |
| HDG | Hickman-Dalton Gang (band) |
| HDG | Hab Dich Gern (German) |
| HDG | Heavy-Duty Gasoline-Powered Vehicle |
| HDG | Harvard Drug Group (pharmaceuticals; Livonia, MI) |
| HDG | Handy Dandy Guide (Internet slang) |
| HDG | Heeresdisziplinargesetz (German) |
| HDG | Hospitality Development Group, Inc (Ft. Lauderdale, FL) |
| HDG | Horizontal Drugs Group (EU) |
| HDG | Hendricks Development Group (Beloit, WI) |
| HDG | High Density Gateway |
| HDG | Home Defense Gun (firearm ownership) |
| HDG | Harbison Design Group (Australia) |
