Savage Weekend is a 1979 American slasher film directed by David Paulsen and starring Christopher Allport, David Gale, William Sanderson, and Caitlin O'Heaney. The film follows a woman who retreats to upstate New York with her wealthy boyfriend, her sister, and friend, only to be stalked by a killer in a disfigured mask.

Filmed in 1976 under the working title The Upstate Murders, and initially marketed as The Killer Behind the Mask, the film was acquired by the Cannon Group and released theatrically in North America in mid 1979. It has been cited as an early prototype for the slasher film, predating both Halloween (1978) and Friday the 13th (1980).