B class

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
 * CIE 101 Class, an Irish diesel locomotive
 * CIE 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