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) See also Castle series (disambiguation)