Kamen Rider Blade (仮面ライダー剣(ブレイド), Kamen Raidā Bureido, stylized in English as Masked Rider Blade or Masked Rider ♠) is a Japanese tokusatsu superhero television series. It is the fourteenth installment in the Kamen Rider Series. It aired on TV Asahi from January 25, 2004 to January 23, 2005. It is a joint collaboration between Ishimori Productions and Toei. Along with the standard insect motif of the Kamen Rider series, Kamen Rider Blade also uses a playing card motif. Each Rider is assigned one of the suits from a deck of cards. It aired as a part of TV Asahi's 2004 Super Hero Time block with Tokusou Sentai Dekaranger.

Blade was later released on DVD by Toei. There were twelve volumes released with the first eleven having four episodes per DVD and the twelfth volume with five episodes.