| Abbreviation | Definition |
|---|---|
| HCMC | Healthier Choices Management Corp |
| HCMM | Honourable Company of Master Mariners |
| HCO | Health Care Organization |
| HCO | Hernandez & Company, CPAs |
| HCO | Hollister Company |
| HCO | Hubbard Communications Office |
| HCRC | Houston Connection Recording Company |
| HCSC | Health Care Service Corporation |
| HCSI | Healthcare Cosmetology Services Inc |
| HCSI | Human Capital Solutions Inc |
| HCTF | Haggar Cigarettes Tobacco Factory |
| HCTF | Haggar Cigarettes & Tobacco Factory |
| HCTH | Holding Company for Tourism and Hotels |
| HCWC | High Country Water Company |
| HD | Haagen Dazs |
| HD | Harley Davidson |
| HD | Home Depot |
| HD | Hurter and Driffield |
| HDAC | Hyundai Digital Asset Company |
| HDC | Heritage Distilling Co |