| 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) |