William Patrick Auld (27 May 1840 – 2 September 1912), usually known by his initials or as "Patrick", was an Adelaide, South Australian vigneron and wine merchant born in Stalybridge (near Manchester, England), the son of Patrick Auld (1811 – 21 January 1886) and Eliza Auld (née McKinnell, 1806 – 8 July 1873).