| Acronym | Definition |
|---|
| GSU➣Georgia State University |
| GSU➣Georgia Southern University |
| GSU➣Governors State University |
| GSU➣Grambling State University |
| GSU➣Google Sketch up |
| GSU➣Genealogical Society of Utah |
| GSU➣Graduate Student Union |
| GSU➣General Service Unit |
| GSU➣Galatasaray University |
| GSU➣Geographically Separated Unit |
| GSU➣George Sherman Union (Boston University) |
| GSU➣Garrison Support Unit |
| GSU➣Geographically-Separated Unit |
| GSU➣Grain Services Union (Canada) |
| GSU➣Gauche Socialiste Unifiée (French: Unified Socialist Left, Morocco) |
| GSU➣Google Stock Unit |
| GSU➣Gulf States Utilities Company (Beaumont, TX) |
| GSU➣General Support Unit |
| GSU➣Global Support Unit (UNDP) |
| GSU➣Gray-Scale Ultrasonography (jaundice test) |
| GSU➣Geneseo State University |
| GSU➣Greater Sudbury Utilities, Inc (Sudbury, ON, Canada) |
| GSU➣Generator Stepup |
| GSU➣Gear Shift Unit |
| GSU➣Gombe State University (Nigeria) |
| GSU➣Gimbal Structure/Shock |