| Acronym | Definition |
|---|
| HCG | Human Chorionic Gonadotropin |
| HCG | High Country Gardens (New Mexico) |
| HCG | Human Capital Group (various locations) |
| HCG | Healthy Computing Guide |
| HCG | HealthCare Communications Group (clinical trials; El Segundo, CA) |
| HCG | Hickson Compact Group (galaxies) |
| HCG | Harman Consumer Group (various locations) |
| HCG | Hardcore Gamer |
| HCG | Home Cell Group (Christianity) |
| HCG | Health Care Guide |
| HCG | Harbinger Consulting Group (Ham Lake, MN) |
| HCG | Huron Consulting Group, Inc (Providence, RI) |
| HCG | Hazard County Girls (band) |
| HCG | Holiday Cottages Group Ltd. (UK) |
| HCG | Hentai Computer Graphics |
| HCG | Hoover Crip Gang |
| HCG | Hoefler Consulting Group |
| HCG | Hartford Computer Group, Inc. |
| HCG | Hoover Criminal Gang |
| HCG | Horizontal location of center of gravity |
| HCG | Hagedorn Center for Geriatrics (New Jersey) |
| HCG | Hard Copy Generator |
| HCG | HUMINT Coordination Group (now CJ2X) |
| HCG | Human Communications Group |