达斯汀·霍夫曼
Dustin Hoffman
饰：卡尔·伯恩斯坦 Carl Bernstein
罗伯特·雷德福
Robert Redford
饰：鲍勃·伍德沃德 Bob Woodward
杰克·瓦尔登
Jack Warden
饰：哈里M.罗森菲尔德 Harry M. Rosenfeld
马丁·鲍尔萨姆
Martin Balsam
饰：霍华德·西蒙斯 Howard Simons
哈尔·霍尔布鲁克
Hal Holbrook
饰：Deep Throat
杰森·罗巴兹
Jason Robards
饰：Ben Bradlee
简·亚历山大
Jane Alexander
饰：Bookkeeper
梅雷迪斯·巴克斯特
Meredith Baxter
饰：Debbie Sloan
内德·比蒂
Ned Beatty
饰：Martin Dardis
F·默里·亚伯拉罕
Fahrid Murray Abraham
饰：Arresting Officer #1
林赛·克洛斯
Lindsay Crouse
饰：Kay Eddy (as Lindsay Ann Crouse)
西德尼·甘尼斯
Sidney Ganis
饰：L.A. Stringer
理查德·米尔豪斯·尼克松
Richard Milhous Nixon
饰：Himself (archive footage) (uncredited)
史蒂芬·柯林斯
Stephen Collins
饰：Hugh W. Sloan, Jr.
佩妮·福勒
Penny Fuller
饰：Sally Aiken
约翰·麦克马丁
John McMartin
饰：Foreign Editor
罗伯特·瓦尔登
Robert Wolkowitz
饰：Donald H. Segretti
Frank Wills
饰：Himself - Watergate Security Guard
大卫·阿金
David Arkin
饰：Eugene Bachinski
Henry Calvert
饰：Bernard L. Barker
多米尼克·查尼斯
Dominic Chianese
饰：Eugenio R. Martinez
布赖恩·克拉克
Bryan Clark
饰：Arguing Attorney (as Bryan E. Clark)
尼古拉斯·科斯特
Nicolas Dwynn Coster
饰：Markham
瓦勒里·科廷
Valerie Curtin
饰：Miss Milland
格涅·戴纳斯基
Gene Dynarski
饰：Court Clerk
Nate Esformes
Nate Esformes
饰：Virgilio R. Gonzales
Ron Hale
饰：Frank Sturgis
理查德·赫德
Richard Herd
饰：James W. McCord, Jr.
波莉·霍利德
Polly Holliday
饰：Dardis' Secretary
詹姆斯·凯伦
James Karen
饰：Hugh Sloan's Lawyer
Paul Lambert
饰：National Editor
弗兰克·拉铁摩尔
Frank Latimore
饰：Judge
Gene Lindsey
饰：Alfred D. Baldwin
安东尼·曼尼诺
Anthony Mannino
饰：Arresting Officer #2
奥琳·安·麦克莱瑞
Allyn Ann McLerie
饰：Carolyn Abbott
詹姆斯·墨塔夫
James Murtaugh
饰：Congress Library Clerk
约翰·奥莱利
John O'Leary
饰：Attorney #1
杰斯·奥苏纳
Jess Osuna
饰：Joe, FBI Agent
内娃·帕特森
Neva Patterson
饰：CRP Woman
George Pentecost
饰：George
佩妮·佩塞尔
Penny Peyser
饰：Sharon Lyons
乔舒亚·谢利
Joshua Shelley
饰：Al Lewis
斯隆·谢尔顿
Sloane Shelton
饰：Bookeeper's Sister
Lelan Smith
饰：Arresting Officer #3
Jaye Stewart
饰：Male Librarian
Ralph Williams
饰：Ray Steuben
乔治·维内尔
George Wyner
饰：Attorney #2
Leroy Aarons
饰：Financial Editor
Donnlynn Bennett
饰：Reporter
Stanley Clay
饰：Assistant Metro Editor (as Stanley Clay)
Carol Coggin
饰：News Aide
Laurence Covington
饰：News Announcer
约翰·德夫林
John Devlin
饰：Metro Editor
John Furlong
饰：News Desk Editor
Amy Grossman
饰：Reporter
Cynthia Herbst
饰：Reporter
Basil Hoffman
饰：Assistant Metro Editor
Mark Holtzman
饰：Reporter
Jamie Smith-Jackson
饰：Post Librarian
Barbara Lipsky
饰：Reporter (as Barbara Litsky)
Doug Llewelyn
饰：White House Aide
Jeff MacKay
饰：Reporter
Irwin Marcus
饰：Reporter
Greg Martin
Greg Martin
饰：Reporter
Ron Menchine
饰：Post Librarian
Christopher Murray
饰：Photo Aide
Jess Nadelman
饰：Assistant Metro Editor
Noreen Nielson
饰：Reporter
Florence Pepper
饰：Message Desk Receptionist
Barbara Perlman
饰：CRP Receptionist
Louis Quinn
饰：Salesman
Peter Salim
饰：Reporter
Shawn Shea
Shawn Shea
饰：News Aide
Marvin Smith
饰：Reporter
Pam Trager
饰：Reporter
Carol Trost
饰：Ben Bradlee's Secretary
理查德·文彻
Richard Venture
饰：Assistant Metro Editor
Bill Willens
饰：Hippie
Wendell Wright
Wendell Wright
饰：Assistant Metro Editor
斯皮罗·西奥多·阿格纽
Spiro Agnew
饰：Himself (archive footage) (uncredited)
沃伦·厄尔·伯格
Warren Burger
饰：Himself (archive footage) (uncredited) (unconfirmed)
沃尔特
Walter Cronkite
饰：Himself (archive footage) (uncredited)
Cara Duff-MacCormick
饰：Tammy Ulrich (uncredited)
Thomas Eagleton
饰：Himself (archive footage) (uncredited)
杰拉尔德·福特
Gerald Ford
饰：Himself (archive footage) (uncredited)
Richard Kleindienst
饰：Himself (archive footage) (uncredited)
Clark MacGregor
饰：Himself (archive footage) (uncredited) (unconfirmed)
帕特·尼克松
Pat Nixon
饰：Herself (archive footage) (uncredited)
Rick O'Donnell
饰：CIA Agent (uncredited)
Del Rager
饰：CIA Agent (uncredited)
约翰·兰道夫
John Randolph
饰：John Mitchell (uncredited)
Ronald L. Ziegler
饰：Himself (archive footage) (uncredited)
沃尔特
Walter Cronkite
饰：自己
Robert S. Mills
饰：电视记者
Penny Peyser
饰：莎伦·里昂
沃尔特·克隆凯特
Walter Cronkite
饰：自己（档案声音）
波利·霍利迪
polly holliday
饰：达迪斯秘书
Joshua Shelley
饰：莱维斯
Penny Fuller
饰：萨莉·艾肯
Stanley Bennett Clay
饰：Assistant Metro Editor,(as Stanley Clay)