The Roommate is a 2011 American psychological thriller film directed by Christian E. Christiansen and written by Sonny Mallhi.

The film stars Leighton Meester, Minka Kelly, Cam Gigandet, Danneel Harris, Matt Lanter, and Aly Michalka.

She meets party girl Tracy, frat boy Stephen—her love interest—and Rebecca, her wealthy but shy college roommate who bears an uncanny resemblance to her.

Claiming that she is a bad influence, Rebecca attacks Tracy in the shower, pins her down, rips out her belly button ring, and threatens to kill her unless she stays away from Sara.

Rebecca kills Cuddles, lying to Sara that the cat ran away, inflicts injuries upon herself, and says she was assaulted by a thug.

Rebecca breaks back into the room and aims the gun at the cuffed and helpless Irene, only to be stopped by Stephen who briefly disarms her but is knocked unconscious.

[5] Billy Zane and Frances Fisher had both starred together in Titanic fourteen years earlier, though in this film they shared no scenes.

[8] Keith Staskiewicz of Entertainment Weekly gave the film a D, saying it "is really just a far-below-par thriller that desperately wishes it were a different movie – a longing it shares with the audience," but praises Meester for bringing "the slightest trace of something fascinating to her role.

[2] Some of the promotional posters and displays for the film used the Christy Administration Building from Southwestern College in Winfield, Kansas as its backdrop.

The college administration voiced concern that permission to use the photograph of the building was not properly obtained and investigated the legality of its use.

[16] Though the film successfully earned $15.6 million in receipts to top the box office during its debut weekend in the United States, concerns continued.