| Acronym | Definition |
|---|
| HDB | Housing Development Board (Singapore government agency) |
| HDB | High Level Data Base |
| HDB | Hybrid Data Base |
| HDB | Hydro Dynamic Bearing |
| HDB | Host Data Base |
| HDB | Heterogeneous Data Base |
| HDB | High Definition Bass |
| HDB | Historical Data Base |
| HDB | Handling Data Base |
| HDB | High Density Binary |
| HDB | High Density Bipolar |
| HDB | Home Data Base |
| HDB | Heidelberg, Germany (Airport Code) |
| HDB | High-Dose Bolus |
| HDB | Hydrostatic Design Basis |
| HDB | Helen Delich Bentley (University of Baltimore, MD) |
| HDB | Hardware Development Board (computer hardware) |
| HDB | High Density Bipolar (AT&T) |
| HDB | Hot Dogs and Buns (competitive eating) |
| HDB | Historic District Board (various locations) |
| HDB | Hard Database |
| HDB | Hull Distribution Box |
| HDB | Home Defense Brigade |
| HDB | Hollow Dielectric Beamguide |
| HDB | High Density Bay (Nortel) |
| HDB | Huygens Data Base (US NASA) |
| HDB | Horizontal Double Break (electrical current isolator) |