Demon Slayer: Kimetsu no Yaiba (Japanese: 鬼滅の刃, Hepburn: Kimetsu no Yaiba, lit. “Blade of Demon Destruction”) is a Japanese manga series written and illustrated by Koyoharu Gotōge. The story follows Tanjiro Kamado, a young boy who becomes a demon slayer after his family is slaughtered and his younger sister Nezuko is turned into a demon. It has been serialized in Weekly Shōnen Jump since February 2016, with its chapters collected in 19 tankōbon volumes as of April 2020. The series is published in English by Viz Media and published by Shueisha in English and Spanish.

An anime television series adaptation by Ufotable aired in Japan from April 6 to September 28, 2019. At the end of the series finale, a sequel film was announced and is scheduled to premiere on October 16, 2020.

In Taisho-era Japan, Tanjiro Kamado is a kindhearted boy who makes a living selling charcoal. However, his peaceful life is shattered when a Demon slaughters his entire family. His little sister Nezuko is the only survivor, but she has been transformed into a Demon herself! Tanjiro sets out on a dangerous journey to find a way to return his sister to normal and destroy the Demon who ruined his life.