Castle class

Castle class may refer to:
 * Castle-class trawler, a class of ships constructed by the Royal Navy from 1916 to 1919
 * Castle-class corvette, a class of ships constructed by the Royal Navy beginning in 1943
 * Castle-class patrol vessel, a class of ships constructed by the Royal Navy beginning in 1980
 * GWR Castle class locomotive, a class of steam locomotives of the British Great Western Railway
 * InterCity 125 train sets operated in the United Kingdom by Great Western Railway (train operating company)