Misfit is a science fiction short story by Robert A. Heinlein. Part of his Future History series, it is collected in the book Revolt in 2100.
The story concerns Andrew Jackson Libby, here called Pinky, a boy from Earth with extraordinary mathematical ability but meager education. Not fitting in on Earth, he joins the Cosmic Construction Corps (see Civilian Conservation Corps), where his abilities prove crucial in moving an asteroid from the Belt to near-Earth orbit.
Libby became one of Heinlein's recurring characters, and would later appear in several works associated with Lazarus Long.
