B-class Melbourne tram

B class may refer to:

Ships

* B-class corvette of the Turkish Navy
* B-class destroyer, launched in 1930 for the British Royal Navy
* B-class destroyer (1913), British torpedo boat destroyers
* B-class lifeboat, British lifeboats
* B-class submarine (disambiguation), several types

Rail transport

* B-class Melbourne tram, an Australian tram
* DHR B Class, built for the Darjeeling Himalayan Railway in India
* NBR B class, a British steam locomotive
* NZR B class (1874), a steam locomotive of the New Zealand Railways Department
* NZR B class (1899), a steam locomotive of the New Zealand Railways Department
* CIÉ 101 Class, an Irish diesel locomotive
* CIÉ 113 Class, an Irish diesel locomotive
* LCDR B class, a British steam locomotive
* MRWA B class, a British steam locomotive
* Victorian Railways B class (1861), an Australian steam locomotive
* Victorian Railways B class (diesel), an Australian diesel locomotive
* WAGR B class, an Australian steam locomotive
* WAGR B class (diesel), an Australian diesel locomotive

Other uses

* B-class blimp, airships operated by the United States Navy
* B-segment, a European vehicle size class
* Mercedes-Benz B-Class, a subcompact executive car

See also

* Class B (disambiguation)
* B type (disambiguation)
* B series (disambiguation)

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