- BAS stands for Bulgarian Academy of Sciences
- BAS stands for Business Activity Statement
- BAS stands for Business Activity Statement (Australian GST)
- BAS stands for Base (building code)
- BAS stands for Basic
- BAS stands for Building Automation System (Sprint)
- BAS stands for British Antarctic Survey
- BAS stands for Building Automation Systems
- BAS stands for Bachelor of Applied Science
- BAS stands for Biblical Archaeology Society
- BAS stands for Before and After School (program; various locations)
- BAS stands for Bay St. Louis (Amtrak station code; Bay St. Louis, Mississippi)
- BAS stands for Body and Society
- BAS stands for Bibliography of Asian Studies
- BAS stands for Bachelor of Architectural Studies (various schools)
- BAS stands for British Art Show (UK)
- BAS stands for Business Accounting Software
- BAS stands for Blackberry Administration Service (software)
- BAS stands for Ballistic Aiming System (Leupold)
- BAS stands for Broke-Ass Stuart (travel writer)
- BAS stands for Brake Assist System
- BAS stands for Balloon Atrial Septostomy (medical procedure)
- BAS stands for Basic Allowance for Subsistence (US DoD)
- BAS stands for Basic Language (File Name Extension)
- BAS stands for Bile Acid Sequestrant (resin)
- BAS stands for Business Advisory Services
- BAS stands for Board for Actuarial Standards (UK FRC)
- BAS stands for Barnes Akathisia Scale (drug severity scale)
- BAS stands for Building and Asset Services (Queensland, Australia)
- BAS stands for Bureau of Agricultural Statistics (Philippines)
- BAS stands for Bulletin of the Atomic Scientists
- BAS stands for Brachycephalic Airway Syndrome (canines)
- BAS stands for Battalion Aid Station
- BAS stands for Boulder Acoustic Society (Colorado)
- BAS stands for Belize Audubon Society
- BAS stands for Broadcast Auxiliary Service (FCC)
- BAS stands for Belding Area Schools (Belding, MI)
- BAS stands for Bureau d’Aide Sociale
- BAS stands for Broadband Access Server
- BAS stands for Bodadeg ar Sonerion (French traditional musician association)
- BAS stands for Balalae, Solomon Islands (airport code)
- BAS stands for Best Access Systems (various locations)