Paranormal Activity: The Ghost Dimension is a 2015 American 3D found footage supernatural horror film directed by Gregory Plotkin in his directorial debut, and written by Jason Harry Pagan, Andrew Deutschman, Adam Robitel and Gavin Heffernan. It is the sixth installment in the Paranormal Activity series. Most of the film takes place after Paranormal Activity 4 (2012), though the plot ties in heavily with the events of Paranormal Activity 3 (2011). It is the first installment not to star Katie Featherston as Katie, although she appears played by Chloe Csengery, who had already portrayed a younger Katie in the last two installments.

The film was released on October 23, 2015. It grossed over $78 million worldwide on a $10 million budget. The Rotten Tomatoes consensus says that the franchise's "thrills are mostly gone". Although this film was initially announced and promoted as the final film in the series, a seventh film, Paranormal Activity: Next of Kin, was released in October 2021.