| Acronym | Definition |
|---|
| BAU | Business As Usual |
| BAU | Bangladesh Agricultural University |
| BAU | Behavioral Analysis Unit (FBI NCAVC) |
| BAU | Baryon Asymmetry of the Universe |
| BAU | Beirut Arab University (Lebanon) |
| BAU | Bande d'Arrêt d'Urgence (French: Emergency Lane; various nations) |
| BAU | Birsa Agricultural University (India) |
| BAU | Bus Adapter Unit (interface) |
| BAU | Al-Balqa' Applied University (Jordan) |
| BAU | Belgian Association of Urology |
| BAU | Bioequivalent Allergy Unit |
| BAU | Biarritz American University (1945-1946; France) |
| BAU | Bouton d'Arrêt d'Urgence (French: Emergency Stop Button) |
| BAU | Beacon Airfoil Unit |
| BAU | Business Administration Unit |
| BAU | Base Audio Package |
| BAU | Bauru, Sao Paulo, Brazil (Airport Code) |
| BAU | Baseband Assembly Unit |
| BAU | Bank Addressable Unit |
| BAU | Base Anesthesia Units (medical) |
| BAU | Baseline Assembly Unit |
| BAU | Backward Adaptive Update |