HMS Winchelsea (D46) was an Admiralty W-class destroyer of the Royal Navy, ordered 9 December 1916 from J. Samuel White at Cowes during the 1916–17 Build Programme.

Winchelsea was launched on 15 December 1917 and was the 7th Royal Navy ship to carry this name, introduced in 1694 and named after the 6th Earl of Winchilsea (1647–1730)[1] In March 1945 she was decommissioned and sold for scrap.

27 July 1940 — 84 survivors from the British freighters Sambre and Thiara were picked up.

17 September 1940 — 25 survivors from the British freighter Crown Arun were picked up after the ship had been torpedoed and then sunk with gunfire by the German submarine U-99, north of Rockall.

2 November 1942 — 24 survivors were picked up after the British freighter Hartington had been torpedoed and sunk by U-521, approximately 450 nautical miles (830 km) east of Belle Isle.