| Acronym | Definition |
|---|
| GU➣Guam (US postal abbreviation) |
| GU➣Global Underground (music label) |
| GU➣Georgetown University |
| GU➣Griffith University (Australia) |
| GU➣Gonzaga University |
| GU➣Göteborgs Universitet (University of Gothenburg, Sweden.) |
| GU➣Grow Up |
| GU➣Guildford (postcode, United Kingdom) |
| GU➣Genitourinary |
| GU➣Gallaudet University |
| GU➣Gastric Ulcer |
| GU➣Glasgow University (Glasgow, Scotland, UK) |
| GU➣Graceland University (Iowa) |
| GU➣Gannon University (Pennsylvania) |
| GU➣Generalunternehmer (German) |
| GU➣Gujarat University (India) |
| GU➣Gently Used |
| GU➣General User |
| GU➣Grace University (Omaha, Nebraska) |
| GU➣Gunma University (Japan) |
| GU➣Gazi University (Turkey) |
| GU➣Gaming Universe |
| GU➣Gomal University (Deraismailkhan, Pakistan) |
| GU➣Guilan University (Iran) |
| GU➣Geographical Unit (currency) |
| GU➣Geographically Undesirable (partner too far away to date on a regular basis) |
| GU➣Gastroenterology/Urology |
| GU➣Geometrically Uniform |
| GU➣Guidance Unit |
| GU➣Guerilla Unit (gaming group) |
| GU➣Global Uranium Corporation (Toronto, ON, Canada) |
| GU➣Geschützte Ursprungsbezeichnung (German: Protected Designation of Origin) |
| GU➣Gaming Union (gaming) |
| GU➣Gaming Update (forum) |
| GU➣Gamer Unlimited (forum) |
| GU➣Gateway Utopia (gaming) |
| GU➣Grafton and Upton Railroad Company |
| GU➣Games Unleashed (online gaming community) |
| GU➣Gamesunderground (gaming) |
GU - the largest and southernmost island in the Marianas which is administered as a territory of the United States; it was ceded by Spain to the United States in 1898