Slumber Party Massacre is a 2021 slasher film directed by Danishka Esterhazy and written by Suzanne Keilly. It is described as a "modern reimagining" of and stand-alone sequel to the original 1982 film The Slumber Party Massacre, and the fourth film released in the overall Massacre franchise. It stars Hannah Gonera, Frances Sholto-Douglas, Alex McGregor, Mila Rayne, Reze-Tiana Wessels with Schelaine Bennett, Rob van Vuuren and Jennifer Steyn. It follows a girls' slumber party which becomes a bloodbath when an escaped mental patient arrives with a power drill.

Shout! Studios announced a remake of the film to be helmed by director Danishka Esterhazy and written by Suzanne Keilly. Production began in Stellenbosch, South Africa in March 2021, with the cast being announced in April.

Slumber Party Massacre made its world premiere at the Fantastic Fest in Austin, Texas on September 27, 2021, and was released on Syfy Channel on October 16. The film received generally positive reviews from critics, with praise for its feminist themes, gore and the performances of the cast, but criticism for its screenplay, character development and pacing.