C class may refer to:

Ships

* C-class destroyer (disambiguation), multiple destroyers * C-class submarine (disambiguation), multiple submarines * C-class corvette (disambiguation), ships of the Victorian Royal Navy * C-class cruiser, Royal Navy light cruisers built just before the First World War * C-class ferry, Canadian ships * C-class lifeboat, British lifeboats * International C-class catamaran, sailing catamaran

Rail vehicles

Australia

* C-class Melbourne tram * Sydney C-Class Tram * Commonwealth Railways C class, 4-6-0 passenger locomotives * MRWA C class, 4-6-2 steam locomotives * Victorian Railways C class, 2-8-0 steam locomotives * Victorian Railways C class (diesel), diesel locomotives * WAGR C class, axle load steam locomotives * WAGR C class (1880), steam locomotives * WAGR C class (diesel), diesel locomotives

Ireland

* CIE 201 Class, locomotives

New Zealand

* NZR C class (1873), tank locomotives * NZR C class (1930), steam locomotives

United Kingdom

* LB&SCR C class, 0-6-0 freight steam locomotives * LCDR C class, 2-4-0 steam locomotives * LNWR Class C, 0-8-0 steam locomotives * NBR C Class, 0-6-0 steam locomotive * Metropolitan Railway C Class, 0-4-4T tank locomotives * SECR C class, 0-6-0 locomotives

Other uses

* C-class blimp, United States Navy blimp * Mercedes-Benz C-Class, mid size passenger vehicle * c-Class, a type of HP BladeSystem server computer * C-segment, a European vehicle size class