Shōnen Ninja Kaze no Fujimaru, also known as Samurai Kid, is a Japanese anime series produced by Toei Animation. 65 episodes aired from 7 June 1964 until 31 August 1965. It tells the story of a ninja's pupil that controlled the wind.

It was inspired by the manga 'Kaze no Ishimaru' by Sanpei Shirato and was animated by Yasuji Mori and Hayao Miyazaki. The anime was renamed "Kaze no Fujimaru" in order to associate it with its sponsor, Fujisawa Pharmaceuticals.

The opening theme, 'Shōnen Ninja Kaze no Fujimaru' and the closing theme, 'Tatakau Shōnen Ninja', were both performed by the Nishirokugo Boy's Choir. The series originally ended with a repeat of the opening; the separate ending song came later.