The Drowning Pool is a 1975 American thriller film directed by Stuart Rosenberg, and based upon Ross Macdonald's novel of the same name. The film stars Paul Newman, Joanne Woodward, and Anthony Franciosa, and is a loose sequel to Harper. The setting is shifted from California to Louisiana.

Ross Macdonald was the main pseudonym used by the American-Canadian writer of crime fiction Kenneth Millar. He is best known for his series of hardboiled novels set in Southern California and featuring private detective Lew Archer. Since the 1970s, Macdonald's works have received attention in academic circles for their psychological depth, sense of place, use of language, sophisticated imagery and integration of philosophy into genre fiction. Brought up in the province of Ontario, Canada, Macdonald eventually settled in the state of California, where he died in 1983.