Roman Polanski Man with knife Director, Actor Jack Nicholson J. J. (Jake) Gittes Actor Faye Dunaway Evelyn Cross Mulwray Actor John Huston Noah Cross Actor Perry Lopez Lt. Lou Escobar Actor John Hillerman Russ Yelburton Actor Darrell Zwerling Hollis I. Mulwray Actor Diane Ladd Ida Sessions Actor Roy Jenson Claude Mulvihill Actor Richard Bakalyan Detective Loach Actor Joe Mantell Lawrence Walsh Actor Bruce Glover Duffy Actor Nandu Hinds Sophie Actor James O'Rear Lawyer Actor James Hong Kahn Actor Beulah Quo Mulwray's maid Actor Jerry Fujikawa Mulwray's Gardener Actor Belinda Palmer Katherine Cross Actor Roy Roberts Mayor Bagby Actor Noble Willingham Councilman Actor Elliott Montgomery Councilman Actor Rance Howard Irate Farmer at Council Meeting Actor George Justin Barney, the Barber Actor C.O. Erickson Banker at Barbershop Actor Fritzi Burr Mulwray's Secretary Actor Robert Towne Writer Robert Evans Producer Rudolf Friml Original Music Jerry Goldsmith Original Music Brian Hooker Original Music John A. Alonzo Cinematographer Sam O'Steen Film Editing Jane Feinberg Casting Mike Fenton Casting Richard Sylbert Production Design W. Stewart Campbell Art Director Ruby R. Levitt Set Decoration Anthea Sylbert Costume Design