HDDA
| Acronym | Definition |
|---|---|
| HDDA | Heavy Duty Distribution Association (Bethesda, MD) |
| HDDA | Hexanediol Diacrylate |
| HDDA | Hartsville Downtown Development Association (South Carolina) |
| HDDA | Horrex Davis Design Associates Ltd. (graphic design agency; UK) |
| HDDA | Hierarchical Dynamic Distributed Array |
| HDDA | High Definition Digital Audio |