- Back-hand
- Back-handed
- Back-to-back
- Backbite
- Backer
- Backpack
- Backroom
- Backstabber
- Backstroke
- Backup
- Backward
- Bacteria
- Bacteriological
- Bacterium
- Bad and baggage
- Bad job
- Bad show
- Bad way
- Badger
- Badminton
- Bae
- Baffied
- Baffling
- Bag and baggage
- Bagel
- Bags
- Bahting
- Bailment
- Baize
- Bake
- Baking
- Balance
- Balance of trade
- Balance sheet
- Balarama
- Balarama's
- Bald-headed person
- Bald-pate
- Balderdash
- Balding
- Ball
- Ballad
- Ballet
- Ballot
- Barm
- Ballyhoo
- Baloney
- Bamboo cluster
- Bamboo mat
- Ban
- Banal
- Banana fruit
- Banana oil
- Bandit
- Bandolier
- Bandwidth
- Banged
- Bangles
- Banishment
- Banister
- Banker
- Banking of curve
- Banquet
- Baptism
- Bar maid
- Barb
- Barbarian
- Barbarity
- Barbeque
- Barber
- Barbers
- Bardic
- Bardoltry
- Bareness
- Bargee
- Bargepole
- Barista
- Barking
- Barn
- Baroque
- Baroscope
- Barracks
- Barring
- Bc
- Barrow
- Barter
- Basal
- Base
- Base mental
- Baseness
- Bashed up
- Bashful person
- Basic
- Basil
- Basket
- Bastard son
- Batch
- Bath
- Bathhouse
- Bathing