William Dunn (South Australian politician)

William Henry Dunn (5 February 1841 – 7 July 1891) was an Australian politician who represented the South Australian House of Assembly seat of Onkaparinga from 1875 to 1878.

William Henry Dunn was the son of John Dunn Snr. and brother of John Dunn Jnr. and brother-in-law of William Paltridge, who also were elected to the Parliament of South Australia.