Dorothy Gale is a fictional character created by American author L. Frank Baum as the protagonist in many of his Oz novels. She first appears in Baum's classic 1900 children's novel The Wonderful Wizard of Oz and reappears in most of its sequels. In addition, she is the main character in various adaptations, notably the 1939 film adaptation of the novel, The Wizard of Oz.

The Emerald City is the capital city of the fictional Land of Oz in L. Frank Baum's Oz books, first described in The Wonderful Wizard of Oz (1900).