"The Next Decade" is the thirty-fifth single by Japanese musical artist Gackt, released on August 11, 2009.
It was used as the theme song for the Kamen Rider Series film ' in which Gackt portrays Riderman. It was released as a CD single and a CD single coupled with a DVD of the music video.
The theme of "The Next Decade" is that of the .
The music video of "The Next Decade" was later released in Stay the Ride Alive, as a "special memorial single" version which is a Digipak with a special cover, a third disc and a booklet describing Gackt's collaboration with the Kamen Rider Decade production.
On its first day of release, it hit #3 on the Oricon Daily Charts after selling 13,000 copies.