• Barbara Ann Brennan, an American author and spiritual healer
• Back-arc basin, a geologic feature which submarine basin associated with island arc and subduction zone
• "Base Attack Bonus", a term used in d20 RPG games
• Bayonne-Anglet-Biarritz, a Communauté d'agglomération (an intercommunal entity) of southwest France
• Beale Air Force Base (IATA airport code: BAB) in California
• Biotechnology and Applied Biochemistry, an academic journal
• Boris Abramovich Berezovsky, a powerful Russian oligarch in self-imposed exile in London
• British Aikido Board, the governing body of Aikido in Britain
• Bunty Aur Babli, a 2005 Indian film
• Bundesautobahn, the federal motorway in Germany
• B. A. Baracus, character portrayed by Mr. T on 1980s action series The A-Team

See also Báb, a founder of the Bahá'í Faith