Joseph Aaron Carnahan is an American film director, screenwriter, producer and occasional actor whose films include Blood, Guts, Bullets and Octane, Narc, Smokin' Aces, The A-Team, The Grey, and Boss

Blood, Guts, Bullets, and Octane is a 1998 American independent action comedy film written, produced, edited, directed and starring Joe Carnahan in his feature-length directorial debut.