| "Treehouse of Horror XXXIV" | |
|---|---|
| The Simpsons episode | |
 Promotional image for the episode | |
| Episode no. | Season 35 Episode 5 |
| Directed by | Rob Oliver |
| Written by |
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| Production code | OABF17 |
| Original air date | November 5, 2023 |
| Guest appearances | |
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"Treehouse of Horror XXXIV" is the fifth episode of the thirty-fifth season of the American animated television series The Simpsons, and the 755th episode overall. It aired in the United States on Fox on November 5, 2023. This is the 34th Treehouse of Horror episode, and, like the other Treehouse of Horror episodes, consisted of three self-contained segments: in "Wild Barts Can't Be Token", Bart turns into a non-fungible token and Marge enters the blockchain to rescue him; in "Ei8ht", Lisa seeks the help of Sideshow Bob to track down a serial killer; and in "Lout Break", Homer eats a contaminated doughnut and starts an outbreak, turning others into versions of him.
The episode was directed by Rob Oliver, and written by Jeff Westbrook, Jessica Conrad and Dan Vebber, one writer per segment, featuring guest voices from Kelsey Grammer, Kylie Jenner and Matthew Friend. This episode's stories were primarily spoofs of the films Snowpiercer, The Silence of the Lambs and Outbreak. Its premiere was watched by around 4.4 million people. The episode received mixed reviews, with segments "Wild Barts Can't Be Token" and "Lout Break" receiving negative reviews from critics, while "Ei8ht" received positive reviews.