P class

P class or Class P may refer to:

Computing P (complexity), a computational complexity class

Rail transport MRWA P class, a class of steam locomotives of the Western Australian Government Railways and Midland Railway of Western Australia Two classes of steam locomotives used by the New Zealand Railways Department: NZR P class (1876), of 1876 NZR P class (1885), of 1885 WAGR P Class, a 1924 express steam-locomotive of the Western Australian Government Railways Westrail P class, a class of diesel locomotive V/Line P class, a type of diesel electric locomotive, in service with V/Line and Pacific National in Australia Victorian Railways P class (1859), a class of steam locomotives SECR P class, a class of locomotives of the South Eastern and Chatham Railway in the UK South Australian Railways P class, a class of steam locomotives Tasmanian Government Railways P class, a class of steam locomotive DSB class P, a class of steam locomotives of the Danish State Railways NER Class P, a class of steam locomotives of the North Eastern Railway Palestine Railways P class P-class Melbourne tram P-class Sydney tram

Ships and yachts P-class cruiser, a class of 12 heavy cruisers planned for construction by the Kriegsmarine during the late 1930s, but cancelled before any could be built Pelorus-class cruiser, a class of 11 protected cruisers operated by the Royal Navy and Royal Australian Navy from the 1890s to the 1920s P-class destroyer, a class of 8 Royal Navy destroyers built during World War II P-class sloop, operated by the British navy during World War I P-class submarine (disambiguation), a number of submarine classes P-class sailing dinghy, a New Zealand sailing dinghy design first created in the 1920s, popularly used for sail training P-class yacht (Universal Rule), a development class for America's Cup racing yachts under the Universal Rule