Donald O'Connor
Melvin Hoover
Debbie Reynolds
Judy Schneider / Judy LeRoy
Una Merkel
Mom Schneider
Richard Anderson
Harry Flack
Allyn Joslyn
Frank Schneider
Les Tremayne
Mr. Henneman
Noreen Corcoran
Clarabelle Schneider
Jim Backus
Mergo
Barbara Ruick
Studio Guide
Robert Taylor
Himself, Cameo Appearance in Judy's Dream
Nesdon Booth
Police Captain (uncredited)
Steve Forrest
Photographer on Crane (uncredited)
Robert Fuller
Acrobatic Cheerleader (uncredited)
Ned Glass
Theatre Manager (uncredited)
Lyn Wilde
Telephone Girl (uncredited)