Bobby Riha

Jack

Dick Beals

Jack (singing voice)

Gene Kelly

Jeremy Keen, the Peddler

Ted Cassidy

The Giant (voice)

Janet Waldo

Princess Serena (voice)

Marni Nixon

Princess Serena (singing voice)

Marian McKnight

Jack's Mother

Chris Allen

Mouse (voice)

Leo De Lyon

Woggle-Bird (voice)

Cliff Norton

Woggle-Bird (voice)

Don Messick

Cat / Mice (voice) (uncredited)

Gene Kelly