HMS Achates was an Acasta (or K)-class destroyer of the British Royal Navy. She was built by the Scottish shipbuilder John Brown and was built between 1912 and 1913. Like all Acasta-class destroyers, Achates was armed with three 4-inch (102 mm) guns and two torpedo tubes, with a specified speed of 29 knots (54 km/h; 33 mph). Achates served throughout the First World War, serving with the Grand Fleet in the early years of the war, and taking part in the Battle of Jutland in 1916. Later in the war she served as a convoy escort. She was sold for scrapping in 1921.