Airlines — B
- BRDBrock Air Services
- DATBrussels Airlines
- BXIBrussels International Airlines
- BTTBT-Slavuta
- BPSBudapest Aircraft Services/Manx2
- BHABuddha Air
- BGRBudget Air Bangladesh
- BG1BudgetAir
- BFLBuffalo Airways
- BRXBuffalo Express Airlines
- BGMBugulma Air Enterprise
- BKVBukovyna
- LZBBulgaria Air
- BVCBulgarian Aeronautical Centre
- BUCBulgarian Air Charter
- BPOBundepolizei-Fliegertruppe
- BQBBuquebus Líneas Aéreas
- XDABureau Veritas
- BFRBurkina Airlines
- IVRBurundaiavia
- BRYBurundayavia
- BUNBuryat Airlines Aircompany
- BAMBusiness Air Services
- RLRBusiness Airfreight
- BCVBusiness Aviation Center
- GAABusiness Express
- EXPBusiness Express Delivery
- AUJBusiness Flight Salzburg
- BFSBusiness Flight Sweden
- BJSBusiness Jet Solutions
- SCJBusiness Jet Sweden
- BCCBusinessAir
- BZZButane Buzzard Aviation Corporation
- PPSButte Aviation
- BUZbuzz
- BUZBuzz Stansted
- UKABuzzaway Limited
- BWLBWA (2002) Ltd
- BYLBylina Joint-Stock Company