HMS Hardy was a Royal Navy ship that was one of 20 Acasta-class destroyers. Serving during the First World War, she was part of the Grand Fleet at the Battle of Jutland. Hardy was built by John I. Thornycroft & Company and laid down on 13 November 1911. The ship was launched on 10 October 1912 and completed on 1 September 1913. She was the 6th vessel of the Royal Navy to bear the name Hardy and the third to receive battle honours.

The Acasta class was a class of twenty destroyers built for the Royal Navy under the Naval Programme of 1911 - 1912 that saw service during World War I. They were the last class of Royal Navy destroyers to have mixed names with no systematic theme When the class was designated as "K", names beginning with that letter were allocated to the ships but never used. The class saw extensive wartime service and seven were lost, including four at the Battle of Jutland.