BAC
- 1,3-Bis(aminomethyl)cyclohexane
- André Bac
- Anti-Corruption Commission (Bangladesh)
- BAC Credomatic
- BAC Express Airlines
- BAC Films
- BAC Inc.
- BAC Mirande
- BACnet
- BASIC-PLUS
- Bac Ishii
- Bac, Western Isles
- Baccalaureate (disambiguation)
- Bache railway station
- Bacs (disambiguation)
- Bacterial artificial chromosome
- Badminton Asia Confederation
- Baduy language
- Bahrain Airport Company
- Baile Átha Cliath
- Balochistan Agriculture College
- Balochistan Arts Council
- Bangabandhu Aeronautical Centre
- Bangla Congress
- Bangladesh Accreditation Council
- Bank Atlantic Center
- Bank of America
- Baryshnikov Arts Center
- Basic access control
- Basque Autonomous Community
- Basutoland African Congress
- Battersea Arts Centre
- Bauru Atlético Clube
- Baç Bridge
- Bać, Rožaje
- Bač (disambiguation)
- Bač Fortress
- Bač pri Materiji
- Bač, Ilirska Bistrica
- Bač, North Macedonia
- Bač, Serbia
- Bead activated carbon
- Beijing Arbitration Commission
- Beirut Art Center
- Belger Arts Center
- Belgrano Athletic Club
- Belmont Abbey College
- Benedicta Arts Center
- Benzalkonium chloride
- Berkeley Art Center
- Bibliothèque et Archives Canada
- Big Apple Chorus
- Big Apple Circus
- Black Arts Council
- Blood alcohol content
- Boeing Airplane Company
- Born-again Christian
- Boston Architectural College
- Boston Area Crusaders
- Botswana Accountancy College
- Brampton Arts Council
- Branch Agricultural College
- Brandenburg African Company
- Brigada Anticrime
- Brigade ammunition column
- Briggs Automotive Company
- Brisbane Administration Centre
- Bristol Aeroplane Company
- Britannia Aquatic Club
- British Accreditation Council
- British Aircraft Company
- British Aircraft Corporation
- British Athletes Commission
- Brixton Artists Collective
- Bronchioloalveolar carcinoma
- Brooklyn Arts Council
- Brotherhood of the Ascended Christ
- Broughton Anglican College
- Budget at completion
- Bukalasa Agricultural College
- Bulawayo Athletic Club
- Bureau of Air Commerce
- Burma Art Club
- Burton Addiction Centre
- Báč
- Bâc
- CBAC (disambiguation)
- Ferdinand Bac
- HP Business Service Management
- International Union of Bricklayers and Allied Craftworkers
- Joyson Safety Systems
- Kbac (disambiguation)
- La Vall del Bac
- List of airports in North Dakota
- National Police (France)
- Rue du Bac, Paris
- United States Army Airborne School
- Vương Văn Bắc
- WBAC
- Water treatment