Kenichi Matsuyama is a Japanese actor whose primary career is in live-action film and television, though he has taken on select roles in animated projects. He was born on March 5, 1985, and is best known internationally for his live-action portrayal of the character L in the Death Note film series. His voice acting credits include both anime films and Japanese dubs of foreign animated features.

In the realm of anime, Matsuyama provided the voice for the lead character Galo Thymos in the 2019 Studio Trigger film Promare. Galo is a passionate and reckless young firefighter who is a member of the anti-Burnish rescue team, Burning Rescue. His performance as the energetic protagonist is a central part of the film, which also had a side story, Promare: Galo-hen. Another notable anime film role is Tatta in the 2014 film Buddha 2: Tezuka Osamu no Buddha - Owarinaki Tabi, the second film in a trilogy based on Osamu Tezuka's manga about the life of Gautama Buddha. In this adaptation, Matsuyama voiced the adult version of Tatta, an original character from Tezuka's work who loses his childhood connection with nature and becomes a violent bandit.

His voice work also extends to other animated productions. He voiced the character Gelus in an episode of the Death Note anime television series, a role that connects to his live-action performance in the franchise's films. Additionally, Matsuyama has done dubbing work for Western animation, such as voicing the villain Balthazar Bratt in the Japanese-language dub of Despicable Me 3 in 2017.

As a performer, Matsuyama has received numerous awards throughout his career, though these honors primarily recognize his extensive work in live-action film. His accolades include the Best New Actor award at the Japan Academy Film Prize in 2007 and the Best Actor award from the Blue Ribbon Awards in 2017, among many others. His voice roles represent a smaller, but noteworthy, component of his broader body of work as a celebrated Japanese actor.