Chain Saw Confidential: How We Made the World's Most Notorious Horror Movie is a 2013 non-fiction book by the actor Gunnar Hansen, who is best known for portraying Leatherface in Tobe Hooper's film The Texas Chain Saw Massacre.

Hansen began work on Chain Saw Confidential after he was approached by various publishers interested in him writing an autobiography.

[2] Another impetus for the book's creation was that several of the cast and crew members had died, making it impossible to gain their perspectives on the film.

[3] As a result, Hansen received about "100,000 words of transcribed interviews, just for the parts I knew were going to serve the book".

[4] Hansen also drew from an earlier autobiography he had written about twenty years prior for his own personal use.