Odd John: A Story Between Jest and Earnest is a 1935 science fiction novel by the British author Olaf Stapledon. The novel explores the theme of the Übermensch (superman) in the character of John Wainwright, whose supernormal human mentality inevitably leads to conflict with normal human society and to the destruction of the utopian colony founded by John and other superhumans.

William Olaf Stapledon – known as Olaf Stapledon – was a British philosopher and author of science fiction. In 2014, he was inducted into the Science Fiction and Fantasy Hall of Fame.