| Acronym | Definition |
|---|
| HDDP➣High Data Defined Persons |
| HDDP➣High Definition Data Processing |
| HDDP➣Horizontally Double Density Pixel |
| HDDP➣Hearing Dogs for Deaf People (UK) |
| HDDP➣Horizontally Double-Density Pixel |
| HDDP➣Hump Day Dance Party (Chicago, IL) |
| HDDP➣Honorable Discharge, Dependency Existing Prior to Enlistment |
| HDDP➣High Definition Data Processing (Baron Services) |
| HDDP➣High Definition Digital Photography |