- Billy Wilder
- Bilo
- bilobalide
- bilocal
- bilocalizing subcatagory
- bilocal operator
- bilogical
- BILP
- Biluo Temple Grottoes
- BIM
- BIMA array
- bimagic cube
- bimagic series
- bimagic square
- Bimal Roy
- bimatrix
- bimatrix game
- bimaxillary protrusion
- bimaximum
- bi-Maxwelian distribution
- bi-Maxwellian distribution
- BIMA射电望远镜阵
- BIMCO
- bimeasurable transformation
- bimeasure