Donald O'Connor
— Pat Donahue Jr.
Donald Cook
— Pat Donahue Sr.
Frances Dee
— Lynn Andrews
Peggy Ryan
— Judy Watkin
Eve Arden
— Jean Matthews
Thomas Gomez
— Max Wilson
Gavin Muir
— Prentiss Johns
Andrew Tombes
— Sam Bassett
Irving Bacon
— Mr. Merney
Emmett Vogan
— Alsop
George Chandler
— Bellboy
Eddie Dunn
— Plumber
Douglas Wood
— Sir Orville
Sidney Miller
— Tony
Helene Stanley
— Jivin' Jills (uncredited)