AAB

• Abelag Aviation in Belgium
• Air Assault Badge, a United States Army military badge
• Anti-aircraft battery, a weapons system component for anti-aircraft warfare
• IATA airport code for Arrabury Airport in State of Queensland, Australia

• Aalborg Boldspilklub, a sports club in Aalborg in Denmark
• AaB A/S, Aalborg Boldspilklub A/S, a Danish company
• ABN AMRO, the largest bank in the Netherlands
• Aboriginal Arts Board, an historical name for part of the Australian Council for the Arts
• Act Against Bullying, a UK charity
• Adyar Ananda Bhavan, a food business in India
• Akita Asahi Broadcasting, a television station in Akita Prefecture, Japan
• Arubaanse Atletiek Bond, the governing body for the sport of athletics in Aruba
• Athletics Association of Barbados, the governing body for the sport of athletics in Barbados
• Association of Applied Biologists, a UK-based learned society promoting applied biology

• Aab (surname)
• Alice Bailey, new age writer often referred to by her initials as AAB
• Akbar Al Baker, Qatar Airways CEO often referred to by his initials as AAB

• .aab, the filename extension for Android App Bundles
• aab, the ISO 639-3 code for the Alumu language, a Niger–Congo language of Nigeria
• Acetic acid bacteria, classified under alphaproteobacteria which are used in making vinegar
• Aniline Yellow or aminoazobenzene
• Bar form, a musical form of the pattern AAB
• Antigua and Barbuda, a Caribbean country

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