BAA
- B2A (disambiguation)
- BA2 (disambiguation)
- BAA Ground
- BAA USA
- BAA plc
- Ba (disambiguation)
- Ba'a
- Baa Atoll
- Baa, Baa, Black Sheep (disambiguation)
- Bachelor of Applied Arts
- Backing Australia's Ability
- Barnham railway station
- Basketball Association of America
- Batting average against
- Bet (letter)
- Billiard Association of America
- Birmingham Architectural Association
- Boston Athletic Association
- British Astronomical Association
- Broad Agency Announcement
- Broadway Across America
- Kwah language
- Papua New Guinea
- Sheep
- Thaana