Mark Waid (; born March 21, 1962) is an American comic book writer, known for his work on titles for DC Comics such as The Flash, Kingdom Come and Superman: Birthright, and for his work on Captain America, Fantastic Four, and Daredevil for Marvel Comics. From August 2007 to December 2010, Waid served as Editor-in-Chief, and later, Chief Creative Officer of Boom! Studios, where he wrote titles such as Irredeemable, Incorruptible, and The Traveler.