Y class

Y class or class Y may refer to:

Rail transport

 * South Australian Railways Y class, a steam locomotive class built in South Australia
 * Victorian Railways Y class, an example of the new policy of standard design principles being adopted by the railways
 * GNoSR Classes X and Y, two similar classes of 0-4-2T steam locomotives
 * NCC Class Y, a class of 0-6-0T steam locomotive
 * NER Class Y, a 4-6-2T steam locomotive
 * SNCF Class Y 7100, a class of small diesel shunters
 * SNCF Class Y 7400, a class of small diesel shunters
 * SNCF Class Y 8000, a class of diesel shunter built between 1977 and 1990
 * SNCF Class Y 8400, a class of small diesel shunters
 * SNCF Class Y 9000, the new designation for modernized and re-engined Y7100 and Y7400 shunters
 * Tasmanian Government Railways Y class, a type of Bo-Bo diesel electric locomotive
 * Victorian Railways Y class (diesel), a small branch line and shunting unit
 * WAGR Y class, a diesel electric locomotive introduced in 1953
 * Y-class Melbourne tram
 * Y1-class Melbourne tram

Other uses

 * Y-class lifeboat, a class of small inflatable boat operated by the RNLI of the United Kingdom and Ireland
 * Spectral class Y, spectral classification of a brown dwarf substellar object
 * Economy class (travel class code used by airlines: "Y")
 * Class Y, a capacitor type