- BAC stands for Baryshnikov Arts Center (New York, NY)
- BAC stands for Blood Alcohol Concentration
- BAC stands for Bakehouse Art Complex (Miami, FL)
- BAC stands for Blood Alcohol Content
- BAC stands for Bank of America Corporation (stock symbol)
- BAC stands for Baccalauréat (French)
- BAC stands for Business Aviation Centre (various locations)
- BAC stands for Bachelor
- BAC stands for Bacterial Artificial Chromosome
- BAC stands for Business Availability Center (software)
- BAC stands for Brigade Anti-Criminalité (French: Anti-Crime Brigade; est. 1994)
- BAC stands for Biometric Access Control (security)
- BAC stands for Berkeley Art Center (Berkeley, CA)
- BAC stands for Breathing Air Compressor (various companies)