Douglas Petrie is an American screenwriter, director, and producer. Best known as a writer, director, and co-executive producer on Buffy the Vampire Slayer. He co-wrote the screenplays for the Fantastic Four film and Harriet the Spy. He has also written for the television shows Angel, The 4400, Tru Calling and American Horror Story: Coven. He served as a co-executive producer and writer for two seasons on CSI: Crime Scene Investigation and as a consulting producer and writer on the second season of Pushing Daisies. He made a cameo on Joss Whedon's web-based film, Dr. Horrible's Sing-Along Blog, as "Professor Normal". He served as co-executive producer on the first season of the Netflix show Daredevil, and took over as showrunner for its second season alongside Marco Ramirez. In April 2016 Petrie and Ramirez were announced as showrunners of The Defenders, a miniseries that crosses over Daredevil, Jessica Jones, Luke Cage, and Iron Fist.
Petrie earned his Bachelor of Arts in English from William & Mary in 1985.
Petrie joined the Buffy writing staff in season three as a story editor. He was promoted to executive story editor in season four, co-producer in season five, supervising producer in season six, and finally co-executive producer midway through season seven.