HMS Perth was a steamship that was built in Scotland in 1915, renamed Lafonia in 1946 and Valfiorita in 1950, and scrapped in Italy in 1962. She was designed as a coastal passenger and cargo liner, but was completed in the First World War as an armed boarding steamer for the Royal Navy. In the Second World War she was converted into an ocean boarding vessel, and served also as a convoy rescue ship.