BUB
| Acronym | Definition |
|---|---|
| BUB | Back-Up Battery |
| BUB | Bulletin Board |
| BUB | Bringing Up Baby (movie) |
| BUB | Belgische Unie-Union Belge (Belgian political group) |
| BUB | Battle Update Briefing |
| BUB | Biblioteca Universitaria Bologna (Italian: Bologna University Library; Bologna, Italy) |
| BUB | Brothers Uplifting Brothers (est. 2000; Merrillville, IN) |
| BUB | Burwell, Nebraska (airport code) |
| BUB | Broadband Ultrasonic Backscatter (radiology) |