The Marvelous Land of Oz: Being an Account of the Further Adventures of the Scarecrow and the Tin Woodman, commonly shortened to The Land of Oz, published in July 1904, is the second book in L. Frank Baum's Oz series, and the sequel to The Wonderful Wizard of Oz (1900). This and the following 34 books in the series were illustrated by John R. Neill.

Princess Ozma is a fictional character from the Land of Oz, created by American author L. Frank Baum. She appears for the first time in the second Oz book, The Marvelous Land of Oz (1904), and in every Oz book thereafter.