James Francis Gunn Jr. (born August 5, 1966) is an American filmmaker, executive and actor. He began his career as a screenwriter in the mid-1990s, starting at Troma Entertainment with Tromeo and Juliet (1997). He then began working as a director, starting with the horror-comedy film Slither (2006), and moving to the superhero genre with Super (2010), Guardians of the Galaxy (2014), Guardians of the Galaxy Vol. 2 (2017), The Suicide Squad (2021), and Guardians of the Galaxy Vol. 3 (2023). In 2022, Warner Bros. Discovery hired Gunn to become co-chairman and co-CEO of DC Studios.
He also wrote and directed the web series James Gunn's PG Porn (2008–2009), the HBO Max original series Peacemaker (2022–present), and the Disney+ original special The Guardians of the Galaxy Holiday Special (2022). Other projects he is known for is writing for the 2004 remake of George A. Romero's Dawn of the Dead (1978), writing the live-action adaptation of Scooby Doo (2002), and its sequel Scooby-Doo 2: Monsters Unleashed (2004), writing and producing the horror-action film The Belko Experiment (2016), producing the superhero-horror film Brightburn (2019), and contributing to comedy-anthology film Movie 43 (2013) (directing the segment "Beezel") and the 2012 hack-and-slash video game Lollipop Chainsaw.