Black Christmas (also released as Silent Night, Evil Night, and Stranger in the House) is a 1974 Canadian independent horror movie. It was directed and produced by Bob Clark. Black Christmas was released on October 11, 1974 in Canada, December 20, 1974 in the United States, and on October 12, 1975 in the United Kingdom. The movie is inspired by the urban legend "The Babysitter and the Man Upstairs" and is also based on murders that took place in Quebec around Christmas. The movie is considered to be one of the first slasher movies. There was a remake that was made and released on Christmas of 2006.

The movie gained positive reviews from critics and holds a 63% "Fresh" rating on Rotten Tomatoes.

A remake of the same name was released in 2006.