Baldwin Locomotive WorksUnited States
BaojunPeople's Republic of China
Bashkir Trolleybus PlantRussiaBatignolles-ChâtillonFrance
Baume & MarpentBelgium
BeijnesNetherlands
BelkommunmašBelarus
BentleyUnited Kingdom
Bergmann-BorsigGermany
Berliner MaschinenbauGerman Empire
BertoneItaly
Bethlehem Shipbuilding CorporationUnited States
Beyer, Peacock and CompanyUnited Kingdom
Bharat Heavy Electricals LimitedIndia
Birmingham Railway Carriage and Wagon Company1854
BKVHungaryBlanc-MisseronFrance
BMWGermany
BMWGermany
Bogdan GroupUkraine
BombardierCanada
BorsigGermanyBowesfield WorksUnited Kingdom
BozankayaTurkey
BredaItalyBreda Costruzioni FerroviarieItalyBredaMenarinibusItaly
Brighton WorksUnited Kingdom
Brissonneau et LotzFrance
British RailUnited Kingdom
British Rail Engineering LimitedUnited Kingdom
British Thomson-HoustonUnited KingdomBritish WestinghouseUnited KingdomBrookville EquipmentUnited States
Brown, Boveri & CieSwitzerland
Brush TractionUnited Kingdom
BugattiNazi Germany
BYD AutoPeople's Republic of China
BYD CompanyPeople's Republic of China