Kōji Ishizaka

is a Japanese actor.

Ishizaka graduated from Keio University with a B.L. degree. He serves as a special advisor for the Japan Plamodel Industry Association, and on 23 February 2009, he founded Rowguanes, a plastic model enthusiast group for the baby boomers.

He starred as Kosuke Kindaichi in the 1970s series of Kindaichi films.

Filmography

Film

• Kindaichi series
• The Inugami Family (1976) – Kosuke Kindaichi
• Akuma no temari-uta (1977) – Kosuke Kindaichi
• Gokumon-to (1977) – Kosuke Kindaichi
• Queen Bee (1978) – Kosuke Kindaichi
• Byoinzaka no Kubikukuri no Ie (1979) – Kosuke Kindaichi
• The Inugamis (2006) – Kosuke Kindaichi
• The Makioka Sisters (1983) – Teinosuke
• Ohan (1984) – Ohan's husband
• The Return of Godzilla (1984) – A reactor operator
• The Burmese Harp (1985) – Inoue
• Bakumatsu Seishun Graffiti: Ronin Sakamoto Ryōma (1986) – Katsu KaishÅ«
• Princess from the Moon (1987) – Mikado
• Oracion (1988) – Yoshinaga
• ' (1990) – Narrator
• 47 Ronin (1994) – Yanagisawa Yoshiyasu
• ' (2001) – Narrator
• ' (2002) – Narrator
• Japan Sinks (2006) – Prime Minister Yamamoto
• ' (2007) – Darkrai (voice)
• Superior Ultraman 8 Brothers (2008) – Narrator
• Suspect X (2008) – A pundit
• Shizumanu Taiyō (2009) – Masayuki Kunimi
• ' (2010) – Narrator
• Library Wars (2013) – Gen Nishina
• ' (2015) – Gen Nishina
• Tannisho (2019) – Shinran (voice)
• Mio's Cookbook (2020)
• Zokki (2021)
• The Floor Plan (2024)
• Silence of the Sea (2024) – Shuzo Tamura

Television

• Taiga drama series
• Hana no Shōgai (1963)
• Akō Rōshi (1964)
• Taikōki (1965) – Ishida Mitsunari
• Ten to Chi to (1969) – Nagao Kagetora
• Genroku Taiheiki (1975) – Yanagisawa Yoshiyasu
• Kusa Moeru (1979) – Minamoto no Yoritomo
• Tokugawa Ieyasu (1983) – Naya Shōan
• Hachidai Shōgun Yoshimune (1995) – Manabe Akifusa
• Genroku Ryōran (1999) – Kira Kōzuke no suke
• Shinsengumi! (2004) – Sakuma Shōzan
• Gō (2011) – Sen no RikyÅ«
• Unbound (2025) – Matsudaira Takechika
• Ultra Q (1966) – Narrator
• Kurayami Shitomenin (1974) – Itoi Mitsugu
• Sekigahara (1981) – Narrator
• Bakumatsu Seishun Graffiti: Sakamoto Ryōma (1982) – Katsu KaishÅ«
• Miyamoto Musashi (1984–85) – Hon'ami Kōetsu
• Bakumatsu Seishun Graffiti: Fukuzawa Yukichi (1985) – Katsu KaishÅ«
• Onna tachi no Hyakuman goku (1988) – Maeda Toshinaga
• Wataru Seken wa Oni Bakari (1990–2015) – Narrator
• Mito Komon (2001–2002) – Tokugawa Mitsukuni
• The Great White Tower (2003) – Professor Azuma
• Furuhata Ninzaburō: Final (2006) – Kyōsuke Tenma
• Clouds Over the Hill (2009–2011) – Yamamoto Gonbei
• Wagaya no Rekishi (2010) – KafÅ« Nagai
• ' (2012–present) - Mineaki Kai
• Yasuragi no Sato (2017) – Sakae Kikumura
• Rakuen (2017) – Kazuo Kanekawa
• Yasuragi no Toki: Michi (2019–20) – Sakae Kikumura
• The Grand Family (2021) – Finance minister Nagata
• Fixer season 3 (2023)