William Hann (1837 - 1889) was a pastoralist and explorer in northern Queensland, Australia. His expedition in 1872 found the first indications of the Palmer River goldfield.

He was born in Wiltshire, England, on 26 February, 1837. Fellow explorer Frank Hann was his younger brother.

The first gold was found by Frederick Warner the expedition's surveyor on 6 August and further deposits were located on following days. However Hann thought they were not in commercial quantity; as a result James Venture Mulligan who in 1873 followed up Hann's report and announced richer deposits is credited with the discovery.

Obituary notice from The Queenslander, Brisbane, Saturday, 21 September, 1889: "HANN--On the 5th April, William HANN, of Maryvale, North Queensland, accidentally drowned whilst bathing in the sea at Townsville, leaving a wife and two daughters to mourn the loss of an affectionate husband and loving father, aged 52."

Further reading

Robert Logan Jack, Northmost Australia, George Robertson and Co., 1922