| Acronym | Definition |
|---|
| UB | Universitat de Barcelona |
| UB | University of Baltimore |
| UB | University at Buffalo |
| UB | Universitätsbibliothek (German: university library) |
| UB | University of Buffalo |
| UB | University of Belize |
| UB | Upward Bound (federally funded high school program) |
| UB | University of Bridgeport |
| UB | University of Botswana |
| UB | Ultimate Bias (Korean pop) |
| UB | United Breweries (India) |
| UB | Ulaanbaatar |
| UB | Ubiquitin |
| UB | Universidad de Belgrano |
| UB | Southall (postcode, United Kingdom) |
| UB | Upper Bound |
| UB | Universitas Brawijaya (Indonesian university) |
| UB | Université de Bourgogne (French: University of Burgundy) |
| UB | Urinary Bladder |
| UB | University of Birmingham (UK) |
| UB | Universal Binaries |
| UB | Urantia Book |
| UB | Union Bay (clothing company) |
| UB | Unacceptable Behavior |
| UB | Uncle Ben's (rice) |
| UB | Unterbezirk (part of Social Democratic Party of Germany) |
| UB | Uncle Bob |
| UB | Ulster Bank |
| UB | Universitaetsbibliothek Basel |
| UB | Universiteits Bibliotheek |
| UB | University of Bremen (Germany) |
| UB | Unaccompanied Baggage |
| UB | Université de Bordeaux (French: University of Bordeaux) |
| UB | Undefined Behavior |
| UB | Unexpected Behavior |
| UB | Ureteric Bud |
| UB | Universal Beam |
| UB | Myanmar Airways (IATA airline code) |
| UB | Universal Banking |
| UB | Underbog (gaming, World of Warcraft) |
| UB | University of Baguio |
| UB | Unlimited Budget |
| UB | Undistributed Budget |
| UB | Universal Bus |
| UB | Unique Browser (internet) |
| UB | Ungerman Bass |
| UB | Unknown Beyond (anime site) |
| UB | Unlicensed Band |
| UB | Urner Barry Publications, Inc. |
| UB | Uncle Bonsai (Seattle rock band) |
| UB | University Bursaries (New Zealand) |
| UB | Unison Bend (guitar playing technique) |
| UB | Unified Build (NTCS-A) |
| UB | Underwater Battery |
| UB | Ultimate Battlestations (canceled D20 Star Wars Roleplaying sourcebook) |
| UB | United Brewaries Ltd. (India) |