| Acronym | Definition |
|---|
| HHD➣Heavy Heavy Duty |
| HHD➣Health and Human Development (Education Development Center, Inc.) |
| HHD➣Herbert Hoover Dike (Florida) |
| HHD➣Husker Harvest Days (trade show; Nebraska) |
| HHD➣Hogshead |
| HHD➣Headquarters Detachment |
| HHD➣Hybrid Hard Drive (Samsung/Microsoft) |
| HHD➣Hailey-Hailey Disease |
| HHD➣Hand Held Device |
| HHD➣Hypertensive Heart Disease (cardiovascular disorder) |
| HHD➣Headquarters & Headquarters Detachment |
| HHD➣Hip Hop Discussion (forum) |
| HHD➣Happy Hump Day |
| HHD➣Hartford Health Department |
| HHD➣Hylian Help Desk (website) |