Orphan is a 2009 psychological slasher film directed by Jaume Collet-Serra and written by David Leslie Johnson from a story by Alex Mace. The film stars Vera Farmiga, Peter Sarsgaard, Isabelle Fuhrman, CCH Pounder, and Jimmy Bennett. The plot centers on a couple who, after the death of their unborn child, adopt a psychopathic nine-year-old girl with a mysterious past.

The film is an international co-production between the United States, Canada, Germany and France. It was produced by Joel Silver and Susan Downey of Dark Castle Entertainment, and Leonardo DiCaprio and Jennifer Davisson Killoran of Appian Way Productions. Principal photography for the film took place in Canada, in the cities of St. Thomas, Toronto, Port Hope, and Montreal.

Orphan was released by Warner Bros. Pictures in the United States and Canada on July 24, 2009. It was released in Germany on October 22, and in France on December 30. The film received mixed reviews from critics and grossed $78.8 million worldwide. A prequel, titled Orphan: First Kill, was released in 2022, with Fuhrman reprising her role.