China 
Africa 
- Azotobacter vinelandii
- Azulene
- Azurin
- Azurite
- Azygos vein
- B band
- B cells
- B channel
- B chromosomes
- B vitamins
- B+ trees
- B-cell lymphoma
- B-cell receptor
- B-frames
- B-pillar
- B-spline
- B-staged
- B-trees
- B2B
- B7
- BACE1
- BACE1-AS
- BACnet
- BAEP
- BAF2
- BAHA
- BAP1
- BAT
- BB84
- BBP
- BCA
- BCC
- BCD
- BCF
- BCH code
- BCI2000
- BDD
- BDF
- BDI
- BDNF
- BEM
- BEOL
- BER
- BERT
- BET theory
- BEV
- BFD
- BFGS
- BFO
- BFS
- BRCA1
- BRCA2
- BRDF
- BREEAM
- BREST
- BRT
- BRVO
- BS
- BS 5930
- BS 8110
- BSA
- BSC
- BSD
- BSD license
- BSFC
- BSI
- BSIM
- BSON
- BSP
- BT-20
- BTC
- BTEX
- BTL
- BTS
- BTU
- BTX
- BUN
- BVH
- BVM
- BWR
- BYOD
- Babbitt
- Babbitt metal
- BabelNet
- Baby shampoo
- Baby-step giant-step
- Bacillary dysentery
- Bacilli
- Bacillus
- Bacillus amyloliquefaciens
- Bacillus anthracis
- Bacillus atrophaeus
- Bacillus brevis
- Bacillus cereus
- Bacillus megaterium
- Bacillus mycoides
- Bacillus stearothermophilus
- Bacillus subtilis
- Back emf
- Back injury