Kanehira Yamamoto is a Japanese voice actor and stage actor born on May 9, 1977, in Tokyo, Japan. He is affiliated with the talent agency EARLY WING. Standing 174cm tall with blood type O, he is also known by the nickname "Kyokenjin". Outside of voice acting, his hobbies and special skills include mountaineering, origami, and creating pixel art.

Yamamoto's career in voice acting began in the mid-1990s, with his first credited role being in the long-running television anime series Detective Conan in 1996. For much of the 2000s and early 2010s, he built a strong foundation as a versatile supporting actor, lending his voice to numerous characters in popular series. Notable roles from this period include various characters in Nura: Rise of the Yokai Clan - Demon Capital, a teacher and relatives in Natsume's Book of Friends, and the role of Hanzō in the Senran Kagura franchise.

His career became more prominent in the mid-2010s as he secured recurring roles in major anime. He is widely recognized for his work in the sports anime Haikyuu!!, where he voices Manabu Naoi, the captain of Tsubakihara Academy. He has reprised this role across multiple installments, including Haikyuu!! Land VS. Air, Haikyuu!! To The Top, and the 2024 feature film Haikyu!! The Dumpster Battle. Another significant and recurring role is that of Rigurd (also credited as Rigurdo), the village chief of the goblins, in the immensely popular fantasy series That Time I Got Reincarnated as a Slime and its spin-off, The Slime Diaries.

Yamamoto's filmography also includes roles in a wide array of other notable productions. He voiced Takeshi J. Hamamoto in the Godzilla anime film trilogy, consisting of Godzilla: Planet of the Monsters, Godzilla: City on the Edge of Battle, and Godzilla: The Planet Eater. In the psychological thriller series Death Parade, he is credited with a role, and he appears in the mystery-adventure Tasokare Hotel as the Hotel Manager. His work extends to dubbing for overseas productions and video games, with roles such as Logan Lee in the Japanese dub of the Korean anime Lookism and various characters in the Street Fighter and Sword Art Online game series.

Yamamoto's career reflects a steady presence in the anime industry since the 1990s, evolving from numerous background and supporting roles to recurring characters in internationally successful franchises. His work in series like Haikyuu!! and That Time I Got Reincarnated as a Slime have solidified his status as a familiar and reliable voice in contemporary anime.