The River class was a class of six torpedo-boat destroyers operated by the Royal Australian Navy. Three were ordered for the Commonwealth Naval Forces (the post-Federation amalgamation of the Australian colonial navies) in 1909; two were built in the United Kingdom, while a third was partially built, disassembled, then transported to Australia for reassembly. Another three ships were later ordered. All six ships were operated during World War I, but were disposed of during the late 1920s and early 1930s. Three were sunk as target ships, while the other three were used as accommodations ships, but later ran aground or sank.