Sir William Henry Houldsworth, 1st Baronet (20 August 1834 in Ardwick, Manchester – 18 April 1917 in Kilmarnock) was a mill-owner in Reddish, Stockport. He was Conservative MP for Manchester North West from 1883 to 1906, and sometime chairman of the Fine Cotton Spinners' Association. He was made a baronet in 1887.