
Millard Isaac Delf (1859-1898) was an American outlaw of the Wild West who was affiliated with the Del Lobo Gang in Arizona during the 1890s. In 1898, he and several other Del Lobos were shot dead by the Arizona Kid as they attempted to ambush Iver U. Peabody and Alrah J. Morsely's wagon caravan as it traveled from Benedict Point, New Mexico to Tumbleweed, Arizona.