Aunt Jane's Nieces at Millville is a 1908 young-adult novel written by L. Frank Baum, famous as the creator of the Land of Oz. It is the third volume in "the successful Aunt Jane Series," following Aunt Jane's Nieces and Aunt Jane's Nieces Abroad. These books for adolescent girls constituted the second greatest success of Baum's literary career, after the Oz books. Like the other books in the series, the Millville volume was released under the pen name "Edith Van Dyne," one of Baum's multiple pseudonyms.