William Gilbert (12 October 1850 – 29 March 1923) was a South Australian pastoralist and vigneron. He was born the only son of Joseph Gilbert (1800–1881) of Pewsey Vale near Lyndoch and his wife Anna née Browne (1812–1873). He was educated at St. Peter's College, and in 1864 enrolled with Cambridge University. Shortly before his death in North Adelaide, he transferred the Wongalere property near Williamstown to his son William, who had been developing its vineyard. William junior sold Pewsey Vale shortly after inheriting it to pay probate duties.