| Acronym | Definition |
|---|
| BAC | Baccalauréat (French) |
| BAC | Bachelor |
| BAC | Blood Alcohol Concentration |
| BAC | Blood Alcohol Content |
| BAC | Bank of America Corporation (stock symbol) |
| BAC | Bacterial Artificial Chromosome |
| BAC | Business Availability Center (software) |
| BAC | Belmont Abbey College |
| BAC | Battersea Arts Centre (London, England) |
| BAC | Business Advisory Council (Asian) |
| BAC | Bricklayers and Allied Craftworkers (union) |
| BAC | British Aircraft Corporation (now BAE systems) |
| BAC | Basic Access Control |
| BAC | British Accreditation Council |
| BAC | Brisbane Airport Corporation |
| BAC | Boston Architectural College (Boston, MA) |
| BAC | Budget Advisory Committee |
| BAC | Business Assistance Center |
| BAC | Bureau d'Assurance du Canada (French: Insurance Bureau of Canada) |
| BAC | Budget At Completion |
| BAC | By Any Chance |
| BAC | Baile Átha Cliath (Irish: Dublin) |
| BAC | Baltimore Air Coil |
| BAC | Breath Alcohol Content |
| BAC | Banco de America Central (Bank of Central America) |
| BAC | Boston Architectural Center |
| BAC | Benzalkonium Chloride |
| BAC | Born Again Christian |
| BAC | Bioethics Advisory Committee |
| BAC | Biological Activated Carbon |
| BAC | Bronchoalveolar Carcinoma |
| BAC | Bindon Aiming Concept |
| BAC | Biotechnology Advisory Committee |
| BAC | Brewers Association of Canada |
| BAC | Bawinanga Aboriginal Corporation (Maningrida, Australia; Aboriginal outstation resource organisation) |
| BAC | Basic Airborne Course (US Army) |
| BAC | Buffalo Athletic Club (Buffalo, NY) |
| BAC | Boston Crusaders (drum & bugle corps) |
| BAC | Business Associate Contract (HIPAA) |
| BAC | Baking Association of Canada |
| BAC | Boeing Airplane Company |
| BAC | Balanced Asynchronous Class |
| BAC | Bar Admission Course (Ontario) |
| BAC | Billing Account Code |
| BAC | Bricklayers and Allied Craftsmen (union) |
| BAC | Budgeted Cost at Completion |
| BAC | Brigade Ammunition Column |
| BAC | Bioremediation Action Committee (EPA) |
| BAC | Bell Atlantic Corporation |
| BAC | Bypass Air Control (valve) |
| BAC | Budget Activity Code |
| BAC | Boating Advisory Council (Florida, USA) |
| BAC | Business Advisory Center |
| BAC | Branch Address Cache |
| BAC | Business Affairs Commission |
| BAC | Bay Arts Council (Bay City, Michigan) |
| BAC | Baltic Business Advisory Council |
| BAC | Bellevue Athletic Club (Bellevue, WA) |
| BAC | Billings Athletic Club |
| BAC | Business Area Controlling (UK) |
| BAC | Buffer Access Card |
| BAC | Breakaway Coupling |
| BAC | Biological Agents of Concern |
| BAC | Bentley Administration Center |
| BAC | Bobcat Athletic Club (aka BAC'ers, Estes Park, Colorado, USA) |
| BAC | Booster Assembly Contractor |
| BAC | British Association of Counseling |
| BAC | Below All Clouds |
| BAC | Billing Adjustment Code |
| BAC | Buyer Agency Commission |
| BAC | Bangalore Anime Club |
| BAC | Boric Acid Concentrator |
| BAC | Block-Acknowledge Counter (ITU-T) |
| BAC | Bournemouth Aviation Consultants Ltd |
| BAC | Binary Asymmetrical Channel |
| BAC | Baseband Assembly Control |
| BAC | Baseline Assembly Control |
| BAC | Business Acquisition Council (SAIC) |
| BAC | building alarm cabinet |
| BAC | Budgeted Activity Code |
| BAC | Bloomer Amusement Co., Inc. |
| BAC | Battle Area Course |
| BAC | Boomerang Association of Canada |
| BAC | Base Advisory Council |
| BAC | Bus Access Circuit |
| BAC | Broad Area Chaff |
| BAC | Business Application Control |
| BAC | Bollard Acoustical Consultants, Inc (Auburn, CA) |
| BAC | BiologicalAgents PC |
| BAC | Basavanagudi Aquatic Center (India) |