| Acronym | Definition |
|---|
| UTB | University of Texas at Brownsville |
| UTB | Upper Target Boundary |
| UTB | Ultimate Tazer Ball (extreme action sport) |
| UTB | Under the Bridge (Red Hot Chili Peppers song) |
| UTB | Up the Bracket (Libertines album) |
| UTB | Ultra Thin Body |
| UTB | Urea Transporter B (antibodies) |
| UTB | Univerzita Tomase Bati (Czech: Tomas Bata University; Zlin, Czech Republic) |
| UTB | Under the Boardwalk |
| UTB | Universal Table Browser |
| UTB | Unrecognized Tax Benefit |
| UTB | United Tongan Brothers |
| UTB | Université pour Tous de Bourgogne (French: University for All Burgundy) |
| UTB | Up to Boy (Japanese female idol magazine) |
| UTB | Urban Taschenbuch (pocket book from Urban Publishers) |
| UTB | Up The Blades (Sheffield United nickname) |
| UTB | United Television Broadcasting Systems, Inc (Hollywood, CA) |
| UTB | up the bum |
| UTB | Boat, Utility (US Coast Guard; 41' boat) |
| UTB | User Test Bed |
| UTB | Uranium Tritide Storage Beds |
| UTB | Under the Table Box |
| UTB | Upper Time Bound |
| UTB | Ural Trans Bank (Russia) |
| UTB | Utilitiesman, Boilerman |
| UTB | United Trust Bank Ltd |
| UTB | Ultimate Team Birmingham (Ultimate Frisbee team, Birmingham, UK) |
| UTB | Unreal Tournament Box (UK) |
| UTB | Up the Boro (Middlesbrough football club) |