Mark Boal is an American journalist, screenwriter, and film producer. Boal initially worked as a journalist, writing for outlets like Rolling Stone, The Village Voice, Salon, and Playboy. Boal's 2004 article "Death and Dishonor" was adapted for the film In the Valley of Elah, which Boal also co-wrote.

In the Valley of Elah is a 2007 American crime drama film written and directed by Paul Haggis. The film stars Tommy Lee Jones, Charlize Theron, and Susan Sarandon. Its title refers to the Biblical valley where the battle between David and Goliath took place.