Demon Slayer: Kimetsu no Yaiba – To the Hashira Training (Japanese: 鬼滅の刃 柱稽古編, Hepburn: Kimetsu no Yaiba Hashira Geiko-hen), also known simply as Demon Slayer: To the Hashira Training, is a 2024 Japanese animated dark fantasy action film based on the "Swordsmith Village" and "Hashira Training" arcs of the 2016–20 manga series Demon Slayer: Kimetsu no Yaiba by Koyoharu Gotouge. It is a direct sequel to the third season of the anime television series as well as its third film adaptation, following Demon Slayer: Kimetsu no Yaiba – The Movie: Mugen Train (2020) and Demon Slayer: Kimetsu no Yaiba – To the Swordsmith Village (2023). The film is directed by Haruo Sotozaki and written by Ufotable staff members.

Similarly to the Swordsmith Village film adaptation, To the Hashira Training acts as a compilation film to the anime television series, incorporating fully the last episode of the third season and the first episode of the fourth season, which was broadcast later in the same year, as well as an edited summary using footage of previous episodes at the beginning.

Demon Slayer: Kimetsu no Yaiba – To the Hashira Training was released in Japan on February 2, 2024, by Toho and Aniplex. Like its predecessors, the film received generally positive reviews and grossed over $44 million worldwide. A sequel film trilogy set after the previous events of the fourth season, Demon Slayer: Kimetsu no Yaiba – The Movie: Infinity Castle, is in development.