
Koji Ishii (石井 康嗣, born 石井 浩司, both read as Ishii Kōji, July 1, 1960) is a Japanese voice actor (seiyuu) from the Arida City, Wakayama Prefecture, Japan. He was formerly affiliated with Ken Production, Beniya 25 Ji, and Vi-Vo. He is freelance and is in a business partnership with AMBERnote since April 1, 2022.

Detective Conan: The Million-Dollar Pentagram
2024 · as Ginzo Nakamori (voice)

Redline
2009 · as Machine Head (voice)

Doraemon: Nobita and the Birth of Japan
2016 · as Tajikara (voice)

Case Closed: The Crimson Love Letter
2017 · as Togo Kaieda (voice)

Fullmetal Alchemist: The Sacred Star of Milos
2011 · as Graz (voice)

Fairy Tail: Phoenix Priestess
2012 · as Cannon (voice)

M.D. Geist II: Death Force
1996 · as Lower Commander

Altered Carbon: Resleeved
2020 · as Genzō (voice)

Kamen Rider Reiwa: The First Generation
2019 · as Another 1 (voice)

Kamen Rider #1
2016 · as Mysterious Ganma

The Empire of Corpses
2015 · as Ulysses Grant (voice)

Kaizoku Sentai Gokaiger: The Movie - The Flying Ghost Ship
2011 · as Chief of Staff Damaras (Voice)

Sin: The Movie
2000 · as John Blade (voice)

Gokaiger Goseiger Super Sentai 199 Hero Great Battle
2011 · as Damaras (voice)

Demon Fighter Kocho
1997 · as Kamo-sensei (Voice)

Beyblade the Movie: Fierce Battle
2002 · as Daichi's Father (voice)

Legend of the Galactic Heroes: Overture to a New War
1993 · as Pastolle

Gatchaman OVA
1994 · as Joe Asakura the Condor (G-2)