| USG | Gobierno de los Estados Unidos 
| Others |
| USG | U S government
| Others |
| USG | U S Gypsum
| Others |
| USG | Ultra-SonoGraphy
| Others |
| USG | Ultrasonography
| Others |
| USG | Ulysses Simpson Grant
| Others |
| USG | Undergraduate Student Government
| Others |
| USG | Undoped Silica Glass
| Others |
| USG | Undoped Silicate Glass
| Others |
| USG | Unhealthy for Sensitive Groups
| Others |
| USG | UniFi Security Gateway
| Others |
| USG | Unified Security Gateway
| Others |
| USG | Unified Strategies Group
| Others |
| USG | Unified System for Global
| Others |
| USG | Uninterrupted Shift Gearbox
| Others |
| USG | Union Station Gateway
| Others |
| USG | United Spacefaring Guild
| Others |
| USG | United States Gallon
| Others |
| USG | United States Gallon (liquid = 231 cu. in. = 3.785411784 litres; dry = 268.8025 cu. in. or 4.40488377086 litres)
| Others |
| USG | United States Gallons
| Others |
| USG | United States Gauge
| Others |
| USG | United States Gibson
| Others |
| USG | United States Gypsum
| Others |
| USG | United Student Government
| Others |
| USG | United Students Government
| Others |
| USG | Universal Security Group
| Others |
| USG | Universities at Shady Grove
| Others |
| USG | University Student Government
| Others |
| USG | University Student Gymnastic
| Others |
| USG | University Students Gymnastic
| Others |
| USG | University System of Georgia
| Others |
| USG | Unix Support Group
| Others |
| USG | Unix Systems Group
| Others |
| USG | Unofficial Strategy Guide
| Others |
| USG | Urban Sound Gallery
| Others |
| USG | Urban Street Gypspys
| Others |
| USG | Urine Specific Gravity
| Others |
| USG | User Support Group
| Others |
| USG | Utility Supply Group
| Others |