13 Fanboy is a 2021 American meta-slasher film directed by Deborah Voorhees and written and produced by her and Joel Paul Reisig. The film focuses on numerous actors that starred in a popular slasher film franchise who find themselves as the target of an obsessed fan that wants to replicate their death scenes in real life. It stars Hayley Greenbauer as Kelsie Voorhees, with Dee Wallace, Deborah Voorhees, C.J. Graham, Kane Hodder, Corey Feldman, Lar Park Lincoln, Judie Aronson, and Tracie Savage as fictionalized versions of themselves.

The film was conceived during the notable Friday the 13th lawsuit that prevented further films to be made. Although featuring an ensemble cast of Friday the 13th actors, it is wholly disparate in terms of tone and style and has no connections to the mythology of the Jason Voorhees saga.

The film was released in select drive-in theaters and video-on-demand on October 22, 2021.