Katsuya Kobayashi (小林且弥, Kobayashi Katsuya, born 10 December 1981) is a Japanese actor from Shimonoseki. Even though he and fellow Kamen Rider Kabuto: God Speed Love-exclusive Rider actor Mitsuki Koga/Kamen Rider Ketaros were only Kamen Riders within the movie, they did make a guest appearance during the final episode of the series as two people affected by the necklaces that transform people into Natives.

This biography of a living person needs additional citations for verification. (July 2022)

As director

• Horizon (2024)^[1]

As actor

• Boutaoshi! (2003)
• Rockers (2003)
• School Wars: HERO (2004)
• Bubu Again (2004)
• Concrete a.k.a. Konkurîto (2004)
• Kamachi (2004)
• Sukûru deizu a.k.a. School Daze (2005)
• Pray (2005)
• Linda Linda Linda (2005)
• Saigo no bansan a.k.a. The Last Supper (2005)
• Yumeno (2005)
• Kamen Rider Kabuto: God Speed Love (2005)
• Hōkyō Monogatari (2006)
• The Cottage (2006)
• Cat Girl Kiki (2006)
• Stay (2007)
• Watch Me (Kansatsu: Eien ni Kimi wo Mitsumete) (2007)
• SAI-REN (2007)
• Little DJ (2007)
• Makiguri no Ana (Peeping Tom) (2007)
• Building and the Zoo (2008)
• Kizumomo (2008)
• Bodyjack (2008)
• Running on Empty (2009)
• Lost Paradise in Tokyo (2010)
• Sweet Silly Love Song (2010)
• The Death Penalty Standards (Shikei Kijun) (2011)
• Gene Waltz (2011)
• Furusatogaeri-Going Home- (2011)
• Synchronicity (2011)
• Arakawa Under the Bridge (2012)
• The Devil's Path (Kyōaku) (2013)
• Maestro! (2015)
• The Emperor in August (2015)
• Bloosoming Into A Family (Madou: After the Rain) (2016)
• Wilderness (2017)
• Kamen Rider Build (2017-2018)
• Last Winter, We Parted (2018)^[2]
• Zenigata (2018)
• Dad, Chibi is Gone (2019)
• Family Bond (2020)^[3]
• Pop! (2021)^[4]
• Takano Tofu (2023)^[5]