
Koji Seki
Known for Acting · 23 credits
- Born
- 1978-10-15 (age 47)
- Place of birth
- Kawaguchi, Saitama, Japan
- Also known as
- 関 幸治 · Kōji Seki · Kouji Seki
Biography
Koji Seki (関 幸治, Seki Kōji, October 15, 1978) is a Japanese actor from Saitama Prefecture. He is affiliated with Animo Produce. He has blood type O.
Known For
TV Shows (3)
Movies (20)

Shin Godzilla
2016

The Cuck, the Slag and the Stealer
2019
as Tamotsu

Chime
2024
as Yoshizawa

Chronicle of My Mother
2012

Red Post on Escher Street
2020
as Koizumi

Intolerance
2021
as Wakita

State of Emergency
2020
as Kodokuna 19-ji

The Sun
2016

Abnormal Rodeo Blues
2020

Hitodzuma otoko (men)-tsukuri hiwaina ajiwai
2024

Haven of Peace
2024

Married Woman's Wetland Disturbed by the Tip of the Tongue
2020
as Kôji Matsumura

Performing Kaoru's Funeral
2024

あ・く・あ〜ふたりだけの部屋〜
2021

Polar Night
2023

Possibly, Huh Huh
2022

At the End of Desire
2024
as Kenji Sato

名前、呼んでほしい
2025

The Lonely 19:00
2020
as Father

Mom in the Mirror
2022
About Koji Seki
Koji Seki (関 幸治, Seki Kōji, October 15, 1978) is a Japanese actor from Saitama Prefecture. He is affiliated with Animo Produce. He has blood type O. With 23 credits spanning from 2012 to 2025, Koji Seki has appeared in 20 films and 3 TV shows.
Fans searching for Koji Seki movies, Koji Seki filmography, or the latest projects starring Koji Seki can stream many of these titles on CineFlixo, free and in HD, with no subscription required.
Most Popular Koji Seki Movies
- Shin Godzilla (2016)
- The Cuck, the Slag and the Stealer (2019) — as Tamotsu
- Chime (2024) — as Yoshizawa
- Chronicle of My Mother (2012)
- Red Post on Escher Street (2020) — as Koizumi
Where to Watch Koji Seki Films
Most Koji Seki movies and series are available to stream on CineFlixo in full HD, completely free and without signup. Browse the complete filmography above to jump directly to any title. For more films and the latest web series featuring Koji Seki, check our movies catalogue and browse page.


