| Acronym | Definition |
|---|
| GMU➣George Mason University |
| GMU➣Game Management Unit |
| GMU➣Gulf Medical University (United Arab Emirates) |
| GMU➣General Motors University |
| GMU➣Guard Medical Unit (US Air Force) |
| GMU➣Gas Metering Unit |
| GMU➣Guided Missile Unit |
| GMU➣Geographic Management Unit |
| GMU➣GPS Monitoring Units |
| GMU➣Grant Management Unit (fundraising) |
| GMU➣Gyro Mechanical Unit |
| GMU➣Gold Musketeer's Uchigatana (gaming) |
| GMU➣Geotechnical Mapping Unit |