Kamen Rider Decade (仮面ライダーディケイド, Kamen Raidā Dikeido, Masked Rider DCD, Masked Rider Decade) is the title of the first installment of the 2009 editions of the long-running Kamen Rider Series of tokusatsu dramas. Decade, as its title suggests, is the tenth of the Heisei Rider Series, having begun with Kamen Rider Kuuga in 2000.

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