Waterside Mill, Ashton-under-Lyne was a combined cotton spinning weaving mill in Whitelands, Ashton-under-Lyne, Greater Manchester. It was built as two independent factories. The weaving sheds date from 1857; the four-storey spinning mill dates from 1863. The spinning was taken over by the Lancashire Cotton Corporation in the 1930s. Production finished in the 1950s.