
Kengo Kawanishi (河西 健吾, Kawanishi Kengo, February 18, 1985) is a Japanese male voice actor. He was born in Osaka and his blood type is A. He was formerly affiliated with Office Kaoru, but is now affliated with Mause Promotion.
He debuted as a voice actor in 2006. In June 2010, he dubbed Sterling Knight for the first time as Christopher in "Starstruck", and in October 2015, he starred for the first time in the anime series "Mobile Suit Gundam: Iron-Blooded Orphans" in the role of Augustus.
Chika Umino, the original author of "March Comes In Like a Lion," described him as "a shining dark voice."

Demon Slayer: Kimetsu no Yaiba Infinity Castle
2025 · as Muichiro Tokito (voice)

Kaiju No. 8: Mission Recon
2025 · as Soshiro Hoshina (voice)

Demon Slayer: Kimetsu no Yaiba -To the Hashira Training-
2024 · as Muichiro Tokito (voice)

Josee, the Tiger and the Fish
2020 · as Yukichi (voice)

Naruto Shippuden the Movie: Blood Prison
2011 · as Muku (young) (voice)

Boruto: Naruto the Movie
2015 · as Yurui (voice)

Demon Slayer: Kimetsu no Yaiba - The Hashira Meeting Arc
2021 · as Muichiro Tokito (voice)

Demon Slayer: Kimetsu no Yaiba -To the Swordsmith Village-
2023 · as Muichiro Tokito (voice)

Batman Ninja vs. Yakuza League
2025 · as Red Robin (voice)

Puella Magi Madoka Magica the Movie Part III: Rebellion
2013 · as School Boy (voice)

Batman Ninja
2018 · as Red Robin / Tim Drake (voice)

The Anthem of the Heart
2015 · as Kazuharu Yamaji (voice)

Aikatsu! The Movie
2014 · as (voice)

Zegapain STA
2024 · as Hal Welt (voice)

Code Geass: Akito the Exiled 4: Memories of Hatred
2015 · as (voice)

Demon Slayer: Kimetsu no Yaiba - Entertainment District Decisive Battle Arc
2023 · as Muichiro Tokito (voice)

Kaiju No. 8: Hoshina's Day Off
2025 · as Soshiro Hoshina

Dead Dead Demon's Dededede Destruction Part 2
2024 · as Tarō Miura (voice)