| Acronym | Definition |
|---|
| HSU➣Humboldt State University (aka California State University, Humboldt) |
| HSU➣Hardin-Simmons University (Abilene, Texas) |
| HSU➣Henderson State University (Arkansas) |
| HSU➣Heroes of the Soviet Union |
| HSU➣Helmut Schmidt University (Hamburg, Germany; est. 1973) |
| HSU➣High Speed Usb |
| HSU➣Hrvatska Stranka Umirovljenika (Croatian Pensioner Party, political party) |
| HSU➣Huachiew Chalermprakiet University (Thailand) |
| HSU➣Happy Science University (Japan) |
| HSU➣Health and Safety Unit (various locations) |
| HSU➣Hartridge Smoke Unit (exhaust gas measurement) |
| HSU➣High Speed Unit |
| HSU➣Hyper Static Union (band) |
| HSU➣Humane Society of Utah |
| HSU➣Helium Service Unit |
| HSU➣Hybrid Switch Unit |
| HSU➣Heroh Sports University |
| HSU➣Horizontal Space Utilization (efficiency metric) |