Circus World (1981) is a science fiction collection by Barry B. Longyear about a planet descended entirely from the population of a crashed spaceship carrying a circus. It comprises the following short stories: * "The Tryouts" (1978) * "The Magician's Apprentice" (1979) * "The Second Law" (1979) * "Proud Rider" (1979) * "Dueling Clowns" (1979) * "The Quest" (1979) * "Priest of the Baraboo" (1979)