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