| Acronym | Definition |
|---|
| HDD➣Hard Disk Drive |
| HDD➣Horizontal Directional Drilling |
| HDD➣Hyderabad (Pakistan) |
| HDD➣Heating Degree Days (weather derivatives / insurance index converting temperature into prices) |
| HDD➣Hickory Dickory Dock (nursery rhyme) |
| HDD➣Hospital de Día (Spanish: Day Hospital) |
| HDD➣Heavy-Duty Diesel |
| HDD➣High Definition Display |
| HDD➣High Definition Decoder |
| HDD➣High Density Disk |
| HDD➣Human Development Department (World Bank) |
| HDD➣Harry the Dirty Dog (book) |
| HDD➣Hard Drive Division (various companies) |
| HDD➣Head-Down Display |
| HDD➣Head Down Display |
| HDD➣High Density Data |
| HDD➣Hearing Dogs for the Deaf (UK) |
| HDD➣Heavy Drinking Day (alcohol dependence) |
| HDD➣High Density Diskette |
| HDD➣Hot Diggity Dog |
| HDD➣Hard Decision Decoding |
| HDD➣Health Data Dictionary |
| HDD➣Highly Doped Drain |
| HDD➣Holographic Disk Drive |
| HDD➣Hrvatski Dalmatinski Dom (Croatian Dalmatian Home, political party) |
| HDD➣Hardware Design Document |
| HDD➣Human Disorientation Device |
| HDD➣Hierarchical Data Dictionary |
| HDD➣Hammer Debounce Device (airguns) |