Douglas Geoffrey McGrath (born February 2, 1958) is an American screenwriter. He is also a film director and actor. He also writes political commentary, such as "The Flapjack File", a column for The New Republic.
A son of Beatrice and R. Searle McGrath, an independent oil producer from Midland, Texas. He is an alumnus of Trinity School of Midland, The Choate School, and Princeton University. At Princeton, he was a member of the Triangle Club and joined its Board of Directors after graduation. In 1995, McGrath married Jane Read Martin, a former assistant of Woody Allen's. She and McGrath have a son named Henry.