Ray Bolger

Nifty Sullivan, a Jack

Anne Shirley

Karanina 'Nina' Novak, the Jill

June Havoc

Opal

Desi Arnaz

Steve Sarto / King Stephan VIII of Aregal

Jack Durant

Noodle McArdle

Eddie Foy Jr.

Happy McScud, a Jack

Fritz Feld

Mr. Hoople

Henry Daniell

Bobo

Joseph E. Bernard

Jailer (uncredited)

William Blees

Eddie, a Jack (uncredited)

Fortunio Bonanova

Mike - Nightclub Owner (uncredited)

Jack Briggs

Nat, a Jack (uncredited)

Jack Carr

Big Guy Behind Nifty at Concert (uncredited)

Jack Gargan

Nightclub Extra (uncredited)

Eddie Hart

Wally - Taxi Driver (uncredited)

Jack Hively