Bad Girl (Japanese: ばっどがーる, Hepburn: Baddo Gāru) is a Japanese four-panel manga series written and illustrated by Nikumaru [ja].

It has been serialized in Houbunsha's seinen manga magazine Manga Time Kirara Carat since March 2021, with its chapters collected into four tankōbon volumes as of July 2024.

An anime television series adaptation produced by Bridge is set to premiere in July 2025.

Written and illustrated by Nikumaru [ja], Bad Girl was initially published in Houbunsha's Manga Time Kirara Carat magazine as a guest work before beginning serialization on March 27, 2021.

It will be produced by Bridge and directed by Jōji Furuta, with scripts written by Shōji Yonemura, characters designed by Yūki Morimoto, and music composed by Arisa Okehazama.