- Country: USA
- Genres: Adventure, Crime, Drama, Romance
- Release: 1940-11-15
- Director: Max Nosseck
- Writers: Jay Dratler , Fanya Foss
- Language: English
- Stars: Bruce Cabot , Rochelle Hudson , Paul Kelly , Tina Thayer , Roberta Smith , Lois Verner , Beryl Vaughan , Joanne Tree , Debbie Ellis , William Edmunds
- Runtime: 64 min
- Awards: N/A
- AKA: Women Under 21 (United States of America) , Girls Under 21 , Girls Under 21 (United States of America) , The Little Professor (United States of America) , Las menores de edad (Mexico)
- Plot: Frances Ryan, living high-and-free-wheeling life as the wife of gangster "Smiley" Ryan, spends some time behind bars as a result of her husband's activities, and, when she gets out, realizes she has been a bad example for her kid-sister, Jennie White, and five of her friends. With the aid of her old boyfriend, she manages to divert them from their juvenile-delinquent path leading to disaster for each.
- IMDB:tt0032529
Girls Under 21 Cast · · · ALL
Max Nosseck
Director
Bruce Cabot
Smiley Ryan
Rochelle Hudson
Frances White Ryan
Paul Kelly
Johnny Cane
Tina Thayer
Jennie White
Roberta Smith
Sloppy Krupnik
Lois Verner
Fatso Cheruzzi
Beryl Vaughan
Marge Dolan
Joanne Tree
Gertie Dolan
Debbie Ellis
Tessa Mangione
William Edmunds
Tony Mangione
John Dilson
Albert Carter, School Principal
John Tyrrell
Rusty