Kamen Rider Zero-One (仮面ライダーゼロワン, Kamen Raidā Zerowan, also called Kamen Rider 01) is a Japanese tokusatsu drama series produced by Toei Company and TV Asahi. It is the 30th series in the Kamen Rider franchise and the first series in the Reiwa period. The show premiered on September 1, 2019, following the finale of Kamen Rider Zi-O, and joined Kishiryu Sentai Ryusoulger, and later, Mashin Sentai Kiramager in the Super Hero Time lineup before concluding on August 30, 2020.

The series' theme revolves around technological singularity and artificial intelligence, a theme shared with the company, Hiden Intelligence, who face threats from the cyber-terrorist group, MetsubouJinrai.net, who want to take over and bring extinction to the human race via a tech uprising.