| Acronym | Definition |
|---|
| USG➣University System of Georgia |
| USG➣Undergraduate Student Government |
| USG➣United States Government |
| USG➣United States Gypsum |
| USG➣Unified Security Gateway (computing) |
| USG➣Under Secretary General |
| USG➣Ultrasonography |
| USG➣Universal Security Group |
| USG➣User Support Group |
| USG➣Unhealthy for Sensitive Groups (air quality index) |
| USG➣Ulysses S. Grant (president and general) |
| USG➣Urine Specific Gravity |
| USG➣Unix Support Group |
| USG➣Utrecht School of Governance (Netherlands) |
| USG➣UNIX Security Guards (hacker group) |
| USG➣United States Gulf (of Mexico) |
| USG➣Undoped Silicate Glass |
| USG➣United States Gallon |
| USG➣Universal Security Group (Microsoft) |
| USG➣Unix Security Guard (pro-Islamic hacking group) |
| USG➣Urea Supergranule |
| USG➣Urban Social Geography |
| USG➣Unión Solidarista Guatemalteca (Guatemalan Solidarity Union) |
| USG➣United States Gauge (Sprint) |
| USG➣Universities of Shady Grove (Maryland) |
| USG➣l'Union Socialiste de Gabonaise (Gabonese Socialist Union; political party) |
| USG➣Utilities Solutions Group |
| USG➣Undoped Silica Glass |