| Acronym | Definition |
|---|
| URB | USB (Universal Serial Bus) Request Block |
| URB | Urbanización (district; postcode use, Puerto Rico) |
| URB | Usb Request Block |
| URB | Universal Request Block |
| URB | Universal Restriction Buffer |
| URB | University Radio Bath (UK) |
| URB | Upright Bass (musical instrument) |
| URB | Unfair Random Brutality (gaming) |
| URB | Urban Semiotic Blog |
| URB | Upper Reliability Bound |
| URB | Unités de Renseignement de Brigade (French: Units Intelligence Brigade) |
| URB | Urubupunga, Sao Paulo, Brazil (Airport Code) |
| URB | Universal Request Broker |
| URB | Unreconciled Balance |
| URB | Union of Russia and Belarus |
| URB | User Requirement Brief |