Three Smart Girls is a 1936 American musical comedy film directed by Henry Koster and starring Barbara Read, Nan Grey, Deanna Durbin (her feature film debut), and Ray Milland. The film's screenplay was written by Adele Comandini and Austin Parker, and is about three sisters who travel to New York City to prevent their father from remarrying. The three plot to bring their divorced parents back together again.

It began an eight-year span of successful Deanna Durbin musicals and spawned two sequels, Three Smart Girls Grow Up and Hers to Hold.