HDN
| Acronym | Definition |
|---|---|
| HDN | Hispanic Digital Network |
| HDN | High Density Network (computing) |
| HDN | Human Development Network |
| HDN | Harden |
| HDN | A Hard Day's Night (Beatles album) |
| HDN | Hemolytic Disease of Newborn |
| HDN | High-Density Nebulizer |
| HDN | Hayden, CO, USA - Yampa Valley Regional Airport (Airport Code) |
| HDN | Health and Development Network |
| HDN | Hyperion Developer Network (software forum) |
| HDN | Homeland Defense Network (Marcus Communications, LLC) |
| HDN | Hudson and Manhattan Railroad |
| HDN | Hemodinamicamente(Spanish: Hemodynamically) |