The Tomorrow Empire is a science fiction novel written by American author Robert A. Heinlein. It was first published in 1941 and is set in a future where the United States has become a totalitarian state. The novel follows the story of a group of rebels who are trying to overthrow the oppressive government and restore freedom to the people. The novel is considered to be one of Heinlein’s best works and has been praised for its exploration of themes such as freedom, justice, and the power of the individual.