George Hamilton
Moss Hart
Jason Robards
George S. Kaufman
Jack Klugman
Joe Hyman
Sam Levene
Richard Maxwell
Ruth Ford
Beatrice Kaufman
Eli Wallach
Warren Stone
Joseph Leon
Max Seigel
George Segal
Lester Sweyd
Sam Groom
David Starr
Sammy Smith
Sam H. Harris
Louise Larabee
Clara Baum
David Doyle
Oliver Fisher
Jonathan Goldsmith
Teddy Manson
Bert Convy
Archie Leach
D
Drummond Erskine
Franklyn P. Adams
Kenneth Mars
Robert E. Sherwood
Roger C. Carmel
Hotel Clerk (uncredited)
J
Janet Fox
Edna Ferber (uncredited)
S
Sylvie Strause
Mrs. Hart
M
Martin Wolfson
Mr. Hart
Earl Montgomery
Alexander Woollcott
A
Arno Selco
Bernie Hart
J
Joe Demar
Heywood Broun
B
Bill Desmond
George Jean Nathan
A
Allen Leaf
Harry the Waiter
L
Lulu B. King
Maid
J
Jack English
Elevator operator (uncredited)
B
Bryce Holman
Minor Role (uncredited)