ASB
- A. S. Byatt
- ASB Bank
- Aarhus School of Business
- Accounting Standards Board
- Advanced stop box
- Alabama Institute for Deaf and Blind
- Alien space bats
- Alt.sex.bondage
- Alternative Service Book
- Alternative break
- American Saddlebred
- American Savings Bank
- American School of Barcelona
- Ancell School of Business
- Anti-social Behaviour Act 2003
- Antisocial behavior
- Apostilb
- Arbeiter-Samariter-Bund Deutschland
- Archives of Sexual Behavior
- Artificially sweetened beverages
- Ashgabat Airport
- Asia School of Business
- Asociación de Scouts de Bolivia
- Associated Student Body
- Asymbescaline
- Auditing Standards Board
- The Australian School of Business