Seiji Rokkaku

is a Japanese actor from Hyōgo Prefecture. He was born in Himeji and raised in Takasago. Rokkaku is the vocalist of Rokkaku Seiji Band. He dropped out of Gakushuin University.

Rokkaku became famous in Japan for his role as Mamoru Yonezawa in . He landed the lead role in AIBOU Series: Yonezawa Mamoru no Jikenbo spin-off film of AIBOU series.

Selected filmography

Film

• One Missed Call (2003)
• Hinokio (2005)
• ' (2007) as Editor-in-chief
• ' (2008) as Mamoru Yonezawa
• AIBOU Series: Yonezawa Mamoru no Jikenbo (2009) as Mamoru Yonezawa
• ' (2010) as Mamoru Yonezawa
• 13 Assassins (2010) as Otake Mosuke
• Leonie (2010) as Postman
• Gekkō no Kamen (2012) as Morinoya Kinta
• Samurai Hustle (2014) as Imamura Seizaemon
• ' (2014) as Mamoru Yonezawa
• Samurai Hustle Returns (2016) as Imamura Seizaemon
• Gintama (2017) as Char Aznable
• Under the Open Sky (2021) as Ryōsuke Matsumoto
• The Fable (2019) as Bar master
• Wedding High (2022) as Daizō Nitta
• What to Do with the Dead Kaiju? (2022) as the Chief Cabinet Secretary
• Anime Supremacy! (2022) as Seki
• Convenience Story (2022), Nagumo
• Baian the Assassin, M.D. (2023) as Tamekichi
• Hey Handsome!! (2024) as Takao's father
• God of Curling (2024)
• ' (2024) as Akagawa
• Petals and Memories (2025) as Kōichi Shigeta

• Carnation (2012) as Megumi Matsuda
• ' (2000–2017) as Mamoru Yonezawa
• Mare (2015) as Anzai Hayato
• ' (2017) as Honda Masanobu
• Half Blue Sky (2018) as Mitsuru Saionj
• Ochoyan (2020) as Katagane Heihachi
• 24 Japan (2020) as Banba Eiiji
• DCU: Deep Crime Unit (2022) as Hideki Tsukishima (ep. 4)
• Lost Man Found (2022) as Arita
• Elpis (2022)
• Gannibal (2022–25), Kiyoshi Gotō
• Kochira yobi jieieiyÅ«ho?! (NTV, 2026)