All the King's Men is a novel by Robert Penn Warren first published in 1946. Its title is drawn from the nursery rhyme Humpty Dumpty. In 1947 Warren won the Pulitzer Prize for All the King's Men.

It was adapted for film in 1949 and 2006.

It is rated the 36th greatest novel of the 20th century by Modern Library,[1] and it was chosen as one of TIME magazine's 100 best novels since 1923.

The 1949 film won three Oscars that year: Best Picture, Best Actor (Broderick Crawford), and Best Supporting Actress (Mercedes McCambridge). It was also nominated for four more categories. In 2001 the United States Library of Congress deemed the 1949 film "culturally significant", and selected it for preservation in the National Film Registry. It is noted, however, for deviating significantly from the novel's storyline.