24 Japan (トゥエンティフォー・ジャパン, Tuentifō Japan, stylized as "24 JAPAN") is a Japanese action thriller television series airing on TV Asahi, based on the American series 24. It began airing from 9 October 2020 and continued through March 2021. It was created by Joel Surnow and Robert Cochran, written by Shūkei Nagasaka and produced by Total Media Communication and 20th Century Fox Television, also commemorates the 60th anniversary of TV Asahi.

The series focuses on Genba Shidō, who works for the Tokyo–based Counter Terrorist Unit, his family, and a plot to assassinate Urara Asakura, who is set to become the first female prime minister of Japan. Some viewers found that in general, the plot of 24 Japan moves more slowly than the fast-paced original series.

The Japanese version of 24 is the second adaptation of the show; following the Hindi-language adaptation of the show. 24 Japan follows a story line similar to the first season of the American series, but with up-to-date technology.