Insidious: The Last Key
- Taon: 2018
- Bansa: United States of America
- Genre: Horror, Thriller
- Studio: Stage 6 Films, Blumhouse Productions, Universal Pictures, Oren Peli Productions
- Keyword: key, medium, haunted house, prequel, spirit, 1950s, insidious
- Direktor: Adam Robitel
- Cast: Lin Shaye, Leigh Whannell, Angus Sampson, Kirk Acevedo, Caitlin Gerard, Spencer Locke