George C. Scott

Gloves Malloy / Spats Baxter

Trish Van Devere

Betsy McGuire / Isobel Stuart

Red Buttons

Peanuts / Jinks Murphy

Eli Wallach

Vince Marlow / Pop

Harry Hamlin

Joey Popchik ("Dynamite Hands")

Ann Reinking

Troubles Moran ("Dynamite Hands")

Jocelyn Brando

Mama Popchik / Mrs. Updike

Michael Kidd

"Pop" Popchik ("Dynamite Hands")

Kathleen Beller

Angie Popchik ("Dynamite Hands")

Barry Bostwick

Johnny Danko / Dick Cummings

Art Carney

Dr. Blaine / Dr. Bowers

Barbara Harris

Trixie Lane ("Baxter's Beauties of 1933")

Rebecca York

Kitty ("Baxter's Beauties of 1933")

George P. Wilbur

Tony Norton ("Dynamite Hands")

Clay Hodges

Sailor Lawson ("Dynamite Hands")

Charles Lane

Judge / Mr. Pennington

Peter Stader

Barney Keegle ("Dynamite Hands")

Dick Winslow

Reporter / Tinkle Johnson

Brendan Dillon

Jury Foreman ("Dynamite Hands")

John Hudkins

Hood #1 / Mover #2

Bob Herron

Hood #2 / Mover #1

Denver Mattson

Sparring Partner ("Dynamite Hands")

Jimmy Nickerson

Freddie Fox ("Dynamite Hands")

Harvey Parry

Referee #1 ("Dynamite Hands")

Wally Rose

Referee #2 ("Dynamite Hands")

James J. Casino

Keegle's Second ("Dynamite Hands")

John McKee

Timekeeper ("Dynamite Hands")

Clifford Happy

K.O. Brown ("Dynamite Hands")

Tom Morga

Killer Wales ("Dynamite Hands")

Jack Slate

Fan #4 ("Dynamite Hands")

Chuck Hicks

Hood #3 ("Dynamite Hands")

George Fisher

Hood #4 ("Dynamite Hands")

Maidie Norman

Gussie ("Baxter's Beauties of 1933")

Barney Martin

Motorcycle Cop ("Baxter's Beauties of 1933")

Sebastian Brook

Fritz ("Baxter's Beauties of 1933")

George Burns

Himself (uncredited)

Stanley Donen

Nightclub Emcee / Cab Driver (uncredited)

Peter Eastman

Jury Member ("Dynamite Hands") (uncredited)