| Acronym | Definition |
|---|
| HU | Hungary |
| HU | Human (Warcraft III) |
| HU | Howard University |
| HU | Head Unit |
| HU | Hampton University |
| HU | Hull |
| HU | Humboldt-Universität (Berlin, Germany) |
| HU | Heads Up (poker) |
| HU | Harvard University |
| HU | Hebrew University (Jerusalem, Israel) |
| HU | Hokkaido University |
| HU | Hookup |
| HU | Hauptuntersuchung (German: car inspection) |
| HU | Hollywood Undead |
| HU | Hooking Up |
| HU | Hiroshima University (Japan) |
| HU | Humanistische Union |
| HU | Hofstra University |
| HU | Hosting Unlimited (South Africa) |
| HU | Handling Unit |
| HU | Harding University (Searcy, AR, USA) |
| HU | Huntington University (Huntington, IN) |
| HU | Universal Hardness |
| HU | Hounsfield Unit (radiology) |
| HU | Hydrologic Unit (watershed boundaries) |
| HU | Hollins University (Roanoke, VA) |
| HU | High Usage |
| HU | Hamdard University |
| HU | Hacettepe Üniversitesi (Turkey) |
| HU | Haigazian University (Beirut, Lebanon) |
| HU | Helicopter Utility Squadron (US Navy Aviation unit designation used in from 1948 to 1965) |
| HU | Human Utilities Whole Armour (motion picture studio) |
| HU | Hell-Unleashed (gaming, Diablo II) |
| HU | Hokies United (Virginia Tech) |
| HU | Hyperemia Unit |