Koji Seki photo

Koji Seki

Acting
1982-11-25
Saitama, Japan
Koji Seki (関 幸司, Seki Kōji, born November 25, 1982) is a Japanese voice actor from Saitama Prefecture who is affiliated with Raccoon Dog. He graduated from Pro-Fit Voice Actor Training School and joined the agency Pro-Fit. On April 1, 2022, he transferred to Raccoon Dog.
Known For 67 titles
Solo Camping for Two (2025) subtitle poster
Solo Camping for Two
2025 TV
as Izakaya Manager (voice)
Subtitles Daily Lives of High School Boys (2012) subtitle poster
Daily Lives of High School Boys
2012 TV
as Basketball Guy (voice)
Subtitles Daily Lives of High School Boys (2012) subtitle poster
Daily Lives of High School Boys
2012 TV
as Boy B (voice)
Subtitles Let This Grieving Soul Retire (2024) subtitle poster
Let This Grieving Soul Retire
2024 TV
as Greg Zangief (voice)
Subtitles The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far (2023) subtitle poster
The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far
2023 TV
as Sebas (voice)
Subtitles Inexpressive Kashiwada and Expressive Oota (2025) subtitle poster
Inexpressive Kashiwada and Expressive Oota
2025 TV
as Mathematics Teacher (voice)
Subtitles Remake Our Life! (2021) subtitle poster
Remake Our Life!
2021 TV
as (voice)
Subtitles Super Cub (2021) subtitle poster
Super Cub
2021 TV
as Clerk (voice)
Subtitles ID: INVADED (2020) subtitle poster
ID: INVADED
2020 TV
as Staff (voice)
Subtitles Tearmoon Empire (2023) subtitle poster
Tearmoon Empire
2023 TV
as Priest (voice)
Subtitles Tearmoon Empire (2023) subtitle poster
Tearmoon Empire
2023 TV
as Man (voice)
Subtitles Tearmoon Empire (2023) subtitle poster
Tearmoon Empire
2023 TV
as Soldier (voice)
Subtitles Tearmoon Empire (2023) subtitle poster
Tearmoon Empire
2023 TV
as Merchant (voice)
Subtitles HAIKYU!! The Dumpster Battle (2024) subtitle poster
HAIKYU!! The Dumpster Battle
2024 Movie
as Patient (voice)
Subtitles Welcome to the Outcast's Restaurant! (2025) subtitle poster
Welcome to the Outcast's Restaurant!
2025 TV
as Merchant (voice)
Subtitles Turkey! Time to Strike (2025) subtitle poster
Turkey! Time to Strike
2025 TV
as Samurai (voice)
Subtitles Umamusume: Pretty Derby - Beginning of a New Era (2024) subtitle poster
Umamusume: Pretty Derby - Beginning of a New Era
2024 Movie
as (voice)
Subtitles Sword Art Online the Movie – Progressive – Scherzo of Deep Night (2022) subtitle poster
Sword Art Online the Movie – Progressive – Scherzo of Deep Night
2022 Movie
as Naijan (voice)
Subtitles DAN DA DAN: First Encounter (2024) subtitle poster
DAN DA DAN: First Encounter
2024 Movie
as TV Station Producer (voice)
Subtitles
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Page 3 of 3 · 67 total credits