Oculus is a 2013 American supernatural psychological horror film co-written, edited, and directed by Mike Flanagan. It is based on his short film Oculus: Chapter 3 – The Man with the Plan, and stars Karen Gillan and Brenton Thwaites as two young adult siblings who are convinced that an antique mirror is responsible for the death and misfortune that their family had suffered.

The film had its world premiere on September 5, 2013, at the 2013 Toronto International Film Festival (TIFF) and received a wide theatrical release on April 11, 2014. It received generally positive reviews from critics, and was a box office success.