- BAIS stands for Baird’s Sparrow (bird species)
- BAIS stands for Battlefield Anti-Intrusion System
- BAIS stands for Bell Atlantic Internet Solutions
- BAIS stands for Backward Alarm Indication Signal
- BAIS stands for Blind Adaptive Interference Suppression
- BAIS stands for Battlefield Automation Interoperability System
- BAIS stands for Battlefield Airborne Instrumentation System
BAIS