Al Pacino
Officer Frank Serpico
John Randolph
Sidney Green
Jack Kehoe
Tom Keough
Biff McGuire
Captain McClain
Barbara Eda-Young
Laurie
Cornelia Sharpe
Leslie Lane
Tony Roberts
Bob Blair
John Medici
Pasquale
Allan Rich
D. A. Tauber
Norman Ornellas
Rubello
Edward Grover
Lombardo
Albert Henderson
Peluce
Hank Garrett
Malone
Damien Leake
Joey
Joseph Bova
Potts
Gene Gross
Captain Tolkin
John Stewart
Waterman
Woodie King Jr.
Larry
James Tolkan
Steiger
Ed Crowley
Barto
Bernard Barrow
Palmer
Sal Carollo
Mr. Serpico
Mildred Clinton
Mrs. Serpico
Nathan George
Smith
Gus Fleming
Dr. Metz
Richard Foronjy
Corsaro
Alan North
Brown
Lewis J. Stadlen
Berman
John McQuade
Kellogg
Ted Beniades
Sarno
John Lehne
Gilbert
M. Emmet Walsh
Gallagher
George Ede
Daley
Charles White
Delaney
F. Murray Abraham
Detective Partner (uncredited)
P.J. Benjamin
Man (uncredited)
Don Billett
Detective Threatening Serpico (uncredited)
Val Bisoglio
Weapons Storage Officer (uncredited)
John Brandon
Police Lieutenant (uncredited)
James Bulleit
Det. Styles (uncredited)
Roy Cheverie
Cop (uncredited)
Sam Coppola
Cop (uncredited)
Marjorie Eliot
Rape Victim (uncredited)
René Enríquez
Cervantes Teacher (uncredited)
Conard Fowkes
Cop - Narcotics Raid (uncredited)
Frank Gio
Police Lieutenant (uncredited)
Trent Gough
Cop (uncredited)
Paul E. Guskin
Police Academy Classmate (uncredited)
Nick Hardin
Television Cameraman (uncredited)
Judd Hirsch
Cop (uncredited)
Richard Kuss
Detective (uncredited)
Tony Lo Bianco
Cop (uncredited)
George Loros
Det. Glover (uncredited)
Kenneth McMillan
Charlie (uncredited)
Stephen Pearlman
Desk Sergeant (uncredited)
Tim Pelt
Black Hood (uncredited)
William Pelt
Black Hood (uncredited)
Jay Rasumny
Television Cameraman (uncredited)
Franklin Scott
Black Prisoner (uncredited)
Tom Signorelli
Bookmaker (uncredited)
Ben Slack
Detective Sitting At Desk (uncredited)
Jaime Sánchez
Cop (uncredited)
Tracey Walter
Street Urchin (uncredited)
Mary Louise Weller
Sally - Girl at Party (uncredited)
Judd Omen
Doctor
Sidney Lumet
Director
Dino De Laurentiis
Executive Producer
Waldo Salt
Screenplay
Arthur J. Ornitz
Director of Photography
Dede Allen
Editor
Norman Wexler
Screenplay
Martin Bregman
Producer
Peter Maas
Book
Jack Fitzstephens
Sound Editor
Reginald Tackley
Makeup Artist
Edward Beyer
Sound Editor
Richard P. Cirincione
Sound Editor
Robert M. Reitano
Sound Editor
B.J. Bjorkman
Script Supervisor
Richard Marks
Co-Editor
Roger M. Rothstein
Associate Producer
Douglas Higgins
Art Direction
Thomas H. Wright
Set Decoration
Anna Hill Johnstone
Costume Design
Charles Bailey
Production Design
Shirley Rich
Casting
Dino De Laurentiis
Producer
Whitey Hughes
Stunts
Burtt Harris
Assistant Director
Alan Hopkins
Assistant Director
Míkis Theodorakis
Original Music Composer