High&Low The Worst is a 2019 Japanese action film directed by Shigeaki Kubo. With collaboration with Hiroshi Takahashi's manga Worst, it told the stories of the war between Oya Koukou (Oya High School) from the world of High&Low and Housen Academy from the world of Worst and Crows. It's the sixth film of the High&Low franchise and a spin-off that renews the franchise by adding a dozen new characters to the world of High&Low.

The idea of the High&Low The Worst was first revealed at the end of the previous High&Low film, DTC -Yukemuri Junjou Hen- from High&Low, with a small video clip revealing that there will be a war between Oya Koukou (Oya High School) and Housen Academy. It was officially announced on February 19, 2019, with its release day setting to be October 4 of the same year. Before the release of the film, a TV series, High&Low The Worst Episode.O, was aired on NTV from July 17, 2019, to introduce the world of High&Low The Worst.

High&Low The Worst 's ensemble cast includes a few members of the Jr. Exile, Kazuma Kawamura, Hokuto Yoshino, Ryu, Hayato Komori, and Yuta Nakatsuka for examples, while actors like Jun Shison and Yuki Yamada and also joined the cast.

High&Low The Worst premiered in Tokyo on August 19, 2019. It grossed 1.25 billion yen in Japan.