| Acronym | Definition |
|---|
| UBAS➣University of Birmingham Air Squadron (Royal Air Force; UK) |
| UBAS➣Urea Based Ammonia System |
| UBAS➣University Burger Appreciation Society (Perth, Australia) |
| UBAS➣Under Bonnet Alarm Switch |
| UBAS➣University of Birmingham Astronomical Society (UK) |
| UBAS➣Under Body Armour Shirt (British military clothing) |