| Acronym | Definition |
|---|
| HDES➣High Density Encoding System |
| HDES➣Human Dimensions of Environmental Systems (University of Illinois) |
| HDES➣Head of Defence Export Services (UK) |
| HDES➣Hospital do Divino Espírito Santo (Azores, Portugal) |
| HDES➣Highland Deaf Education Service (UK) |