- automobile policy
- Autonomous consumption
- autonomous expenditures
- Autonomous transactions
- Autoregression
- autotoxin
- auxiliary account
- auxiliary body
- auxiliary condition
- auxiliary facilities
- auxiliary information
- availability
- available balance
- available credit
- available inventory
- available means
- aver cake
- average adjuster
- average balance
- average claim
- Average cost
- average dividend
- average errors
- average expert
- average inventory
- average life
- average number
- average price
- average receipts
- average stock
- average sum
- average value
- averaging clause
- averaging maturity
- aviation insurance
- aviculture
- avoidable cost
- avoirdupois ton
- awaiting collection
- award meeting
- azeotropic mixture
- azym
- azymic
- b one
- baby bond
- baby container
- baby food
- bacillicide
- back
- back bar
- back dating
- back door
- back fat
- back fillet
- back fin
- back freight
- back in
- back interest
- back letter
- back load
- back orders
- back out
- back payment
- back pressure
- back rent
- back room
- back side
- back someone
- back split
- back taxes
- back titration
- back up
- back-dated
- backdate
- backdating
- Backdoor fancing
- backed bill
- backed ham
- backed note
- backer
- backfile
- backflush accounting
- background
- background music
- backhander
- backhaul
- backing
- backing away
- backlog
- backlog demand
- backlog depreciation
- backroad
- backroom stock
- backspace
- backstocking
- Backstop technology
- backup
- backup copy
- backup data
- backup line