Bungo Stray Dogs: Dead Apple (Japanese: 文豪ストレイドッグス デッドアップル, Hepburn: Bungō Sutorei Doggusu Deddo Appuru) is a 2018 Japanese animated film produced by Bones. It is directed by Takuya Igarashi and written by Kafka Asagiri and Yōji Enokido. It is based on the manga Bungo Stray Dogs written by Asagiri and illustrated by Sango Harukawa. Taking place after events of the second season of the anime television series, a group of detectives learn of a string of apparent suicide cases that have been happening to people with supernatural powers. Atsushi Nakajima and his friends thus go to confront the culprit of this case, a man named Tatsuhiko Shibusawa. Returning voice actors include Kensho Ono, Kishō Taniyama, Mamoru Miyano, Yūto Uemura, and Akira Ishida.

The film was conceived by Asagiri, who wished to continue the story after the television series had concluded in late 2016. The team aimed to create a deep storyline loosely based on the real Tatsuhiko Shibusawa while balancing the impact of the role of the film's characters, most notably Atsushi and Chūya Nakahara. Granrodeo, Screen Mode and Luck Life provided the film's theme songs. A two-volume manga adaptation of the film was released in Japan, and two light novels were also written to promote the film.

The film earned a total of ¥550 million (US$4.98 million) at the Japanese box office, while winning multiple awards from the magazine Newtype, most notably the "Theatrical Film Award". Critical reception to the film was generally positive for the handling of the character's roles and the visuals, though many felt that newcomers to the series would have difficulty understanding the story.