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")

George P. Wilbur

Tony Norton ("Dynamite Hands")

Charles Lane

Judge / Mr. Pennington

Dick Winslow

Reporter / Tinkle Johnson

Brendan Dillon

Jury Foreman ("Dynamite Hands")

John Hudkins

Hood #1 / Mover #2

Bob Herron

Hood #2 / Mover #1

Jimmy Nickerson

Freddie Fox ("Dynamite Hands")

Harvey Parry

Referee #1 ("Dynamite Hands")

John McKee

Timekeeper ("Dynamite Hands")

Tom Morga

Killer Wales ("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")

George Burns

Himself (uncredited)

Stanley Donen

Nightclub Emcee / Cab Driver (uncredited)