ABI is an acronym or abbreviation that may refer to:

  • Abilene Regional Airport (IATA airport code), in Abilene, Texas, United States
  • Abitur
  • AbiWord
  • Acquired brain injury
  • Advanced Baseline Imager on GOES-R satellite
  • Agencia Boliviana de Información, a Bolivian press agency
  • Alabama Bureau of Investigation
  • Albanian Boys Inc
  • American Beverage Institute
  • American Biographical Institute
  • Anheuser-Busch InBev
  • Ankle-Brachial Index
  • Application binary interface, a low-level computer programming interface
  • Applied Biosystems
  • Arabian Business International, an international magazine
  • Association of British Insurers
  • Auditory brainstem implant
  • Organic Union International, a.k.a. Association biologique internationale, a non-governmental organization against degenerative diseases