ABI
- AB1 (disambiguation)
- ABI (military land vehicle)
- ABI1
- ABI2
- ABI3
- Abbi (disambiguation)
- Abi (Cholo)
- Abi (actor)
- Abi (singer)
- Abi Kusno Nachran
- Abi Masatora
- Abi, Cross River
- Abi, Iran
- Abidji language
- Abigail (name)
- Abijah (queen)
- Abilene Regional Airport
- Abis (disambiguation)
- Abitur
- Acquired brain injury
- Agencia Boliviana de Información
- Agile business intelligence
- American Bankruptcy Institute
- American Beverage Institute
- American Biographical Institute
- Anheuser-Busch InBev
- Ankle–brachial pressure index
- Application binary interface
- Applied Biosystems
- Arabian Business International
- Association of British Insurers
- Associazione Bancaria Italiana
- Auditory brainstem implant
- GOES-R
- Mustafa Abi