Basilisk ~Kōga Ninpō Chō~ (バジリスク 〜甲賀忍法帖〜, Bajirisuku ~Kōga Ninpō Chō~) is the anime based on Masaki Segawa and Futaro Yamada's manga Basilisk: The Kouga Ninja Scrolls. It was produced by GONZO and directed by Fumitomo Kizaki.
It originally ran between April and September 2005, running for 24 episodes in total. The series first premièred in Japan on the television stations TV Saitama, TV Kanagawa, Chiba TV, Mie TV, KBS, AT-X, Jidaigeki Senmon Channel, and others between April and September 2005. The series has also been aired across numerous international regions, including Malaysia on ntv7, Canada on Razer, the United States on IFC, Russia on 2x2, Turkey on MTV Türkiye, and numerous others.