| Acronym | Definition |
|---|
| HDC➣Half Double Crochet |
| HDC➣Historic District Commission (various locations) |
| HDC➣Hill Descent Control (automobiles) |
| HDC➣Home Design Center (various locations) |
| HDC➣Housing Development Corporation (New York, NY) |
| HDC➣High-Dose Chemotherapy |
| HDC➣Hot Dog Cart |
| HDC➣Hastings District Council (New Zealand) |
| HDC➣Harborough District Council (UK) |
| HDC➣Hard Disk Crusher (various companies) |
| HDC➣High Density Distribution Chassis |
| HDC➣Hybrid Device Controller |
| HDC➣Hardware Data Compression |
| HDC➣High Definition Camera |
| HDC➣High Dependability Computing |
| HDC➣Handle to a Device Context |
| HDC➣Hill Descent Control |
| HDC➣Horsham District Council (UK) |
| HDC➣Histidine Decarboxylase |
| HDC➣Hard Disk Controller |
| HDC➣Horowhenua District Council (New Zealand) |
| HDC➣Help Desk Central (Texas A&M University) |
| HDC➣High Desert Church |
| HDC➣Home Detention Curfew (UK criminal system) |
| HDC➣Heavy Duty Chassis (vehicles) |
| HDC➣Hold-Down Clip (various companies) |
| HDC➣Heartland Developers Conference (software) |
| HDC➣Henry Dunant Centre (conflict resolution) |
| HDC➣Horticultural Development Council (UK) |
| HDC➣Health & Disability Commissioner (New Zealand) |
| HDC➣High Dependency Care (healthcare) |
| HDC➣Hors de Combat (French: Outside the Fight) |
| HDC➣Holder in Due Course (legal) |
| HDC➣Health Data Consortium |
| HDC➣Health Discovery Corporation (molecular diagnostics; Savannah, GA) |
| HDC➣Homier Distributing Company (Huntington, IN) |
| HDC➣Hard Drive Carrying (case) |
| HDC➣Hard Drive Crash |
| HDC➣Honeysuckle Development Corporation (New South Wales; Australia) |
| HDC➣Hydrodynamic Chromatography (analytical chemistry) |
| HDC➣Heart and Diabetes Center (Germany) |
| HDC➣Hydroelectric Design Center (US Army Corps of Engineers) |
| HDC➣Help Defeat Cancer (project) |
| HDC➣Hotel del Coronado |
| HDC➣Historic Development Commission (Alabama) |
| HDC➣Helicopter Direction Center |
| HDC➣Hensall District Cooperative (Canada) |
| HDC➣High Density Connector |
| HDC➣Higher Diploma Course (various locations) |
| HDC➣Harbor Defense Command |
| HDC➣Hollandse Dagblad Combinatie |
| HDC➣Heartland Deaf Center, Inc. |
| HDC➣Harbor Defense Commander |
| HDC➣Hackers Dot Com |
| HDC➣Hasselblad Data Camera |
| HDC➣Habitability Design Center (US NASA) |
| HDC➣Hardwoods Development Council (Pennsylvania Department of Agriculture; Harrisburg, PA) |
| HDC➣Hardware Design Center |
| HDC➣Handle for Device Context (Microsoft Windows programming) |
| HDC➣Houston Dow Center |
| HDC➣Hackers Digital Crime (German) |
| HDC➣Hotel Development Council |
| HDC➣Historical Data Collection (IBM) |
| HDC➣Hybrid Driver Controller |
| HDC➣Hijo del Cura (Spanish) |
| HDC➣Helicopter Director Center |
| HDC➣Helicopter Defense Command |
| HDC➣Hawkins Data Center (California DOJ) |
| HDC➣Henry Dryden Collection (art; UK) |
| HDC➣Harmonie de Charlesbourg |
| HDC➣Helicopter Dynamic Component |
| HDC➣Health and Development Centre (various locations) |
| HDC➣Harmonie de Coaticook |