Iron John: A Book About Men is a book by American poet Robert Bly published in 1990 by Addison-Wesley, and his best known work to the public at large. An exegesis of Iron John, a parable about a boy maturing into adulthood (monomyth) with help of the wild man, and part of the Grimms' Fairy Tales published in 1812 by German folklorists Brothers Grimm, it spent 62 weeks on The New York Times Best Seller list and went on to become a pioneering work in the mythopoetic men's movement.