Kamen Rider Amazon (仮面ライダーアマゾン, Kamen Raidā Amazon) is a Japanese tokusatsu television series. The fourth installment to be produced as part of the Kamen Rider Series, the series aired in Japan from late 1974 to early 1975 on the NET and Mainichi Broadcasting System. It was the shortest Kamen Rider series ever, lasting only 24 episodes. While this was believed to be due to the show's heavy amounts of graphic violence, in reality, this was due to a pre-planned changeover between networks airing the program, from NET and its ANN network to Tokyo Broadcasting System and its JNN network. This was a result of ABC switching to the former and MBS switching to the latter, which requested a clean break in airing series, thus resulting in a pre-planned end at episode 24. Its timeslot on NET was taken over by Himitsu Sentai Gorenger a week after its finale aired.