James Cagney
George M. Cohan

Joan Leslie
Mary

Walter Huston
Jerry Cohan

Richard Whorf
Sam Harris

Irene Manning
Fay Templeton

George Tobias
Dietz

Rosemary DeCamp
Nellie Cohan

Jeanne Cagney
Josie Cohan

Frances Langford
Singer

George Barbier
Erlanger

Walter Catlett
Theatre Manager

Douglas Croft
George M. Cohan, as a boy of 13

Eddie Foy Jr.
Eddie Foy

Minor Watson
Albee

Chester Clute
Goff

Odette Myrtil
Madame Bartholdi

Patsy Parsons
Josie Cohan, as a girl of 12

S.Z. Sakall
Schwab

Ann Doran
Receptionist (uncredited)

Frank Faylen
Sergeant on Parade (uncredited)

Pat Flaherty
Sgt. Lewis (uncredited)

Bert Moorhouse
Maurice Ruppe (uncredited)

Dolores Moran
The Pippirino (uncredited)

Poppy Wilde
Chorus Girl for 'Little Johnny Jones' Number (uncredited)

Phyllis Kennedy
Fanny (uncredited)

Doris Merrick
(uncredited role)

Murray Alper
Wiseguy

Audrey Long
Dietz and Goff's Receptionst