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Koutaro Nishiyama

Acting

Born October 11, 1991 · Kanagawa, Japan

Also known as Kotaro Nishiyama · 西山 宏太朗 · Kōtarō Nishiyama

Awards & recognition

  • Seiyu AwardBest Rookie Actor · 2018

Filmography34 titles

With You, Our Love Will Make It Through

2025as Yukihiro Aida (voice)

Demon Slayer: Kimetsu no Yaiba

2019as (voice)

Haikyu!!

2014as Kawashita (voice)

Your Lie in April

2014as Soccer Club Member (voice)

The Ancient Magus' Bride

2017as Isaac Farrar (voice)

Blue Spring Ride

2014as Middle school boy (voice)

My Happy Marriage

2023as Koji Tatsuishi (voice)

To Your Eternity

2021as Rean's Fiancé (voice)

Cute High Earth Defense Club LOVE! LOVE! LOVE!

2017as Atsushi Kinugawa

Noragami

2014as Suzuha (voice)

School Babysitters

2018as Kashima Ryuuichi (voice)

Major 2nd

2018as Hikaru Satō (voice)

Re:ZERO -Starting Life in Another World-

2016as Kiritaka Muse (voice)

Haikyu!! The Dumpster Battle

2024as Kazuhito Narita (voice)

Tougen Anki: Dark Demon of Paradise

2025as Jin Kougasaki (voice)

Aoashi

2022as Junnosuke Nakano (voice)

Kiznaiver

2016as Yoshiharu Hisomu (voice)

91 Days

2016as Frate (voice)

Dance Dance Danseur

2022as Yamato Takura (voice)

The Heike Story

2022as Emperor Takakura (voice)

The Vampire Dies in No Time

2021as Sagyou (voice)

Dragon Goes House Hunting

2021as Archer (voice)

Mr. Tonegawa: Middle Management Blues

2018as Toshimasa Kawasaki (voice)

Free!: Take Your Marks

2017as Tooru Iwashimizu / David (voice)

RE-MAIN

as Eitaro Oka (voice)

ALL OUT!!

as Youto Keta (voice)

Cute High Earth Defense Club LOVE!

as kinugawa atsushi (voice)

BEM

2019as Roddy Walker (voice)

Skull-face Bookseller Honda-san

She Professed Herself Pupil of the Wise Man

2022as Aizenfald (voice)

A3!

2020as Tsuzuru Minagi (Voice)

My New Boss Is Goofy

2023as Kentaro Momose (voice)

The Tale of Outcasts

as Shura (voice)

Muteking the Dancing Hero

as Winter (voice)