Jack Nicholson

J.J. 'Jake' Gittes

Faye Dunaway

Evelyn Cross Mulwray

John Huston

Noah Cross

Perry Lopez

Lieutenant Lou Escobar

John Hillerman

Russ Yelburton

Diane Ladd

Ida Sessions

Roman Polanski

Man with Knife

Roy Jenson

Claude Mulvihill

Richard Bakalyan

Detective Loach

James Hong

Evelyn's Butler

Bruce Glover

Duffy

Joe Mantell

Lawrence Walsh

Roy Roberts

Mayor Bagby

Noble Willingham

Councilman

Rance Howard

Irate Farmer

Jesse Vint

Farmer in the Valley

Burt Young

Curly

Lee de Broux

Policeman

Darrell Zwerling

Hollis I. Mulwray

James O'Rear

Lawyer

Beulah Quo

Maid

Jerry Fujikawa

Gardener

C.O. Erickson

Customer

Charles Knapp

Mortician

Allan Warnick

Clerk

John Holland

Farmer in the Valley

Paul Jenkins

Policeman

Fritzi Burr

Mulwray's Secreatry

Cosmo Sardo

Barber (uncredited)