ABB is a Swedish-Swiss high-tech engineering multinational corporation.

ABB may also refer to:

• abb, ISO 639-3 code for the Bankon language, a Bantu language of Cameroon
• ABB, former IATA code of RAF Abingdon
• ABB, IATA code of Asaba International Airport in Nigeria
• ABB, reporting mark of the Akron and Barberton Belt Railroad
• αΒΒ, a deterministic global optimization algorithm
• Azərbaycan Beynaxalq Bankı, the International Bank of Azerbaijan
• ABB Grain, an Australian agribusiness
• African Blood Brotherhood, a former radical black liberation group in the United States
• Alex Boncayao Brigade, a Filipino communist death squad
• The Allman Brothers Band, an American rock band
• Archives of Biochemistry and Biophysics, a peer-reviewed scientific periodical
• Activity Based Budgeting
• ABB (banana), a clade of banana