Robert Montgomery (; born Henry Montgomery Jr.; was an American actor, director, and producer. He began his acting career on the stage, but was soon hired by MGM. Initially assigned roles in comedies, he soon proved he was able to handle dramatic ones, as well. He appeared in a wide variety of roles, such as the weak-willed prisoner Kent in The Big House, the psychotic Danny in Night Must Fall, and Joe, the boxer mistakenly sent to Heaven in Here Comes Mr. Jordan. The last two earned him nominations for the Academy Award for Best Actor.

The Big House is a 1930 American pre-Code prison drama film directed by George Hill, released by Metro-Goldwyn-Mayer, and starring Chester Morris, Wallace Beery, Lewis Stone and Robert Montgomery. The story and dialogue were written by Frances Marion, who won the Academy Award for Best Writing Achievement. As one of the first prison movies, it inspired many others of this genre.