County class may refer to:
*
County-class destroyer
The County class was a class of British guided missile destroyers, the first such warships built by the Royal Navy. Designed specifically around the Seaslug (missile), Seaslug anti-aircraft missile system, the primary role of these ships was ar ...
, a post–World War II class of guided missile destroyers
*
County-class cruiser, pre–World War II class of heavy cruiser
* The County class of Great Western Railway locomotives, were both a
class of 4-4-0 locomotives built between 1904 and 1912 and a
class of 4-6-0 locomotives built between 1945 and 1947
*
''Monmouth''-class cruiser of pre–World War I armoured cruisers, also known as County class
*
''Talbot County''-class tank landing ship, a post–World War II class of landing ships
*
County-class patrol vessel, a class of patrol vessel operated by the
Jamaican Coast Guard
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