Darcy O'Brien (July 16, 1939, Los Angeles - March 2, 1998, Tulsa) was an award-winning author of fiction and literary criticism, most well known for his work in the genre of true crime. His first novel, A Way of Life, Like Any Other, was a fictionalized account of his childhood in Hollywood. In 1985, he wrote a book about the Hillside Stranglers entitled Two of a Kind: The Hillside Stranglers which was adapted into a made-for-television film called The Case of the Hillside Stranglers starring Richard Crenna.
O'Brien attended Princeton University and University of Cambridge, and received a master's degree and doctorate from the University of California, Berkeley. From 1965 to 1978 he was a professor of English at Pomona College. In 1978 he moved to Tulsa, and taught at the University of Tulsa until 1995.
O'Brien died of a heart attack in Tulsa on March 2, 1998.
- 1978: Ernest Hemingway Award for best first novel, A Way of Life, Like Any Other
- 1997: Edgar Allan Poe Award, Power to Hurt'
O'Brien was inducted into the Oklahoma Writers Hall of Fame in 1997.
- A Way of Life, Like Any Other (1977 & 2001). New York: Norton. ISBN 978-0393087987. OCLC 3203215
- Moment by Moment, novelization of screenplay by Jane Wagner (1979)
- The Silver Spooner (1981)
- Two of a Kind: The Story of the Hillside Stranglers (1985)
- Murder in Little Egypt (1989)
- Margaret in Hollywood (1991)
- A Dark and Bloody Ground (1993)
- Power to Hurt (1996)
- The Hidden Pope (2001)