Big Boy is a 1930 American Pre-Code musical comedy film produced by Warner Bros.

The film was directed by Alan Crosland and stars Al Jolson, Claudia Dell, Louise Closser Hale, and Noah Beery.

The young heir of the family, Jack, loses a lot of money by gambling and is blackmailed by his creditors for forging a check.

They persuade Jack to ask his mother to replace Gus with another jockey for the family's racehorse, Big Boy, but she refuses.

Gus finds work as a waiter in a fancy restaurant, where he uncovers the details about the race throwing plot.