- Bougainville Battle
- Bougainville Independence Movement
- Bougainville Island
- bougie
- Bouguer
- bouguer anomaly
- Bouguer correction
- bouguer correction
- bouguer gravity anomaly
- Bouguer Lambert law
- Bouguer-Lambert law
- Bouguer law
- Bouguer plot
- Bouguer's law
- Bou-Hedma National Park
- Boukornine National Park
- boulder
- Bouldering Climbing
- Boulder model
- boule
- boule court
- Bouligand
- Bouligand differential
- Bouligand dimension
- Boulle's marquetry technique