My Bloody Valentine 3D is a 2009 American 3D slasher film directed and co-edited by Patrick Lussier, and written by Todd Farmer and Zane Smith. A remake of the 1981 Canadian film of the same name, it stars Jensen Ackles, Jaime King, Kerr Smith and Kevin Tighe, with Edi Gathegi and Tom Atkins in supporting roles. The film focuses on the residents of a small town that is plagued by a serial killer in mining gear on Valentine's Day, who is believed to be the same murderer who was thought to have died a decade prior.

After filming on location in Pennsylvania, the film was given a 3D theatrical release. It was the first R-rated film to be projected in RealD technology and to have a wide release (1,000 locations) in 3D-enabled theaters.

My Bloody Valentine 3D was released in the United States on January 16, 2009, by Lionsgate Films. The film grossed $100.7 million worldwide on a budget of $14 million.