Yamamoto Koichi

Name: Yamamoto Koichi
Native name: 山本耕一
Also Known as: Yamamoto Kouichi, やまもとこういち
Nationality: Japanese
Gender: Male
Born: March 2, 1935
Died: January 29, 2026

Yamamoto Koichi was a Japanese actor born in Meguro, Tokyo, Japan. He graduated from the first literature department of Waseda University.

After graduation, he joined the Haiyuuza Theater Company in the 8th term. After leaving Haiyuuza, he joined the Shinjinkai theater company and made his debut in the stage play "Don Carlos" in 1960. Since then, he has been active mainly in theater but has also appeared in movies and TV dramas.

His wife was actress and talent Kobayashi Chitose. His eldest daughter is actress Yamamoto Mario.

He died on January 29, 2026, at the age of 90 due to lung cancer.

(Source: Japanese = Wikipedia || Translation = MyDramaList) Edit Biography

Year	Title	#	Role	Rating
1994	The Daughter In Law Japanese Drama, 1994, 13 eps Nakamura Shoichiro [Kenichiro's father] (Ep. 1) (Guest Role)	13	Nakamura Shoichiro [Kenichiro's father] (Ep. 1) Guest Role	0.0
1972	Taiyo ni Hoero Japanese Drama, 1972, 718 eps Ebara Yukio (Ep. 57) \| (Ep. 335) \| Akutsu Shuzo (Ep. 678) \| Sakurai Masataka (Ep. 707) (Guest Role)	718	Ebara Yukio (Ep. 57) \| (Ep. 335) \| Akutsu Shuzo (Ep. 678) \| Sakurai Masataka (Ep. 707) Guest Role	4.0
1969	Onihei Hankacho Japanese Drama, 1969, 65 eps Torio Daijiro (Ep. 1) \| Yoshima no Nisaburo (Ep. 22) (Guest Role)	65	Torio Daijiro (Ep. 1) \| Yoshima no Nisaburo (Ep. 22) Guest Role	0.0
1967	Ultraseven Japanese Drama, 1967, 49 eps Dr. Yushima (Ep. 5, 25) (Guest Role)	49	Dr. Yushima (Ep. 5, 25) Guest Role	7.5

Year	Title	Role	Rating
1972	Under the Flag of the Rising Sun Japanese Movie, 1972, [Ministry of Health and Welfare official] (Support Role)	[Ministry of Health and Welfare official] Support Role	7.6
1963	Maiko to Ansatsusha Japanese Movie, 1963, (Support Role)	Support Role	0.0

Year	Title	#	Role	Rating
1997	Hoigaku Kyoshitsu no Jiken File 6: Tsuma wa Jisatsu Shita Yokujitsu ni Otto o Koroshita…!? Japanese Special, 1997, 1 eps Sotori Ryosuke [Diet member] (Guest Role)	1	Sotori Ryosuke [Diet member] Guest Role	0.0