- a
- asset swap - as
- assist
- assistance
- at (@)
- atout
- attachment
- audience
- audit
- auditing
- auditing firm report
- austerity
- authority
- autocar
- automation
- autorun
- autovelox
- available
- avance
- avatar
- average
- average linked bond
- award
- axis
- b
- baby
- baby-sitter
- baby talk
- back-end
- back-office
- back testing
- back-to-back testing
- backbone
- background
- backlog
- backslash
- backspace
- backstage
- backtracking
- backup
- backward and forward compatible
- badge
- badget
- badminton
- ballpoint [pen]
- ban
- ban
- ban
- banjo
- banner
- ban[ning]
- bar
- barrier option
- baseball
- basis trading
- basket
- basket[ball]
- basketball
- batch
- batch-data terminal
- batch-file
- batch-header
- batch-job
- batch-processing
- batch-record
- batch-total
- baywatch
- bazooka
- beach
- beach volley
- beamer
- bear market
- beat
- beatnik
- beautiful country
- beauty case
- beauty center
- beauty contest
- beauty farm
- bed and breakfast
- beggiare
- below the line
