Mister Big - 2.2★

Donald O'Connor - Donald J. O'Connor

Gloria Jean - Patricia Davis

Peggy Ryan - Peggy

Robert Paige - Johnny Hanley

Elyse Knox - Alice Taswell

Samuel S. Hinds - Jeremy Taswell

Elinor Donahue - Muggsy

Florence Bates - Mrs. Mary Davis

Ray Eberle - Ray Eberle

Ben Carter - Ben Carter - Choir Leader

Irving Bacon - Jimmy, Malt Shop Proprietor

Roland Dupree - 'Jivin' Jacks and Jills' Member (uncredited)

Bess Flowers - Theatrical Party Member (uncredited)

Shirley Mills - 'Jivin' Jacks and Jills' Member (uncredited)

Patsy O'Connor - Genius' Dancing Partner (uncredited)