| Acronym | Definition |
|---|
| HMG | High Mobility Group (protein) |
| HMG | High-Mobility Group |
| HMG | Homing |
| HMG | Hemoglobin |
| HMG | Heavy Machine Gun |
| HMG | Human Menopausal Gonadotrophin |
| HMG | Horizontal Merger Guidelines (acquisitions) |
| HMG | Heschong Mahone Group, Inc. (California) |
| HMG | Heritage Medical Group (Pennsylvania) |
| HMG | Habitat Management Guidelines (conservation) |
| HMG | Home Mortgage Group (Canada) |
| HMG | Hazard Mitigation Grant (US FEMA) |
| HMG | Hydroxy Methyl Glutaryl |
| HMG | Hospitalist Management Group (various companies) |
| HMG | Hemagen Diagnostics, Inc. (former stock symbol; now HMGN) |
| HMG | Hannover Marketing Gesellschaft (German: Hannover Marketing Company; Hannover, Germany) |
| HMG | Hope Medical Group (Georgia) |
| HMG | Home Media Gallery (Pioneer Kuro plasma TV) |
| HMG | Help Me God |
| HMG | Homelessness Monitoring Group (UK) |
| HMG | High Moral Ground |
| HMG | Hill Mechanical Group (Illinois) |
| HMG | Hospitality Management Group (Charleston, SC) |
| HMG | Halter Marine Group, Inc. |
| HMG | Her/His Majesty's Government (British Government) |
| HMG | Holy Mother of God (Internet slang) |
| HMG | Herring Media Group, Inc. |
| HMG | Happy Mardi Gras |
| HMG | Hydraulically Motored Generator |
| HMG | High Maintenance Girlfriend |
| HMG | Hotel Managers Group, LLC |