William Jardine

William Jardine may refer to:


 * William Jardine (merchant), Scottish surgeon and merchant, one of the founders of Jardine, Matheson & Co.
 * Sir William Jardine, 7th Baronet (1800–1874), Scottish naturalist
 * William Marion Jardine (1879–1959), U.S. Secretary of Agriculture (1925–1929),  U.S. Ambassador to Egypt (1930–1933)
 * William Murray Jardine (born 1984), 24th Chief of Clan Jardine
 * William Jardine, editor of the Farmer's Almanac