HMS Totnes was an paddle minesweeper built for the Royal Navy during World War I and used in minesweeping operations off Scapa Flow.<Ref> </ref>
The Ascot-class paddle minesweepers<Ref> </ref> were inspired by the hired paddle sweepers that had performed well early in the war, following Ailsa Shipbuilding Company's successful design for Glen Usk.
HMS Totnes was built by the Archibald McMillan & Son. She was launched on 17 May August 1916.<Ref> </ref> In 1916 her bow was blown off by a naval mine.<Ref> </ref> Between 1916 and 1918 she served in the Minesweeper Flotilla protecting the Grand Fleet at Scapa Flow under Commander (later Admiral) Tom Baillie-Grohman.
Totnes was sold in March 1922.