"The Quest for Saint Aquin" is a science fiction short story by the American writer Anthony Boucher, originally published in 1951 in New Tales of Space and Time. "The Quest for Saint Aquin" was among the stories selected in 1970 by the Science Fiction Writers of America as one of the best science fiction short stories published before the creation of the Nebula Awards. As such, it was published in The Science Fiction Hall of Fame Volume One, 1929-1964.