Ken'ichi Matsuyama( Matsuyama Ken’ichi), born March 5, 1985 in Mutsu, Aomori, Japan) is a well known Japanese actor.

Movies

* Winning Pass (2003)
* Bright Future (2003)
* Guuzen nimo saiaku na shounen (2003)
* The Locker 2 (2004)
* Kamachi (2004)
* The Taste of Tea (2004)
* Linda Linda Linda (2005) as Makihara
* Nana (2005) as Shin (Shinichi Okazaki)
* Furyo shonen no yume (2005)
* Kasutamu-meido 10.30 (2005)
* Otoko-tachi no Yamato (2005) as Katsumi Kamio (15 years old)
* Oyayubi sagashi (2006)
* Death Note (2006) as L
* Death Note: The Last Name (2006) as L
* The Blue Wolf: To the Ends of the Earth and Sea (2007) as Juchi
* Ten Nights of Dream (2007)
* Shindo (2007)
* Dolphin Blue: Fuji, mou ichido sora e (2007)
* L: Change the World (2008) as L
* Don't laugh at my romance (2007-2008) as 19 year old boy
* Detroit Metal City

TV Series

* Gokusen (2002)
* Kids War 5 (2003)
* 1 Litre of Tears (2005) as Yuji Kawamoto
* Tsubasa No Oreta Tenshitachi (2006)
* Sexy Voice and Robo (2007) as Robo

Voice Roles

* Death Note (Anime) (2006) as Gelus.