Isamu Kosugi  (小杉 勇 ,  Kosugi Isamu , 24 February 1904 – 8 April 1983)  was a Japanese actor and film director.
Born in Ishinomaki  in Miyagi Prefecture , Kosugi first studied at the Nihon Eiga Haiyū Gakkō before joining the Nikkatsu  studio in 1925. He came to prominence in tendency films  such as Ikeru ningyō  (1929). He was the lead player in a series of critically acclaimed realist films made at Nikkatsu's Tamagawa studio in the 1930s, particularly Tomu Uchida's Jinsei gekijō  (1936) and Tsuchi Gonin no sekkōhei  (1938) and Mud and Soldiers Atarashiki tsuchi  (aka Die Tochter des Samurai ), directed by Arnold Fanck  and Mansaku Itami . He was renowned at the time as a skilled actor with an individual style.
After World War II , he moved into directing, working primarily at Nikkatsu, where he filmed comedy series and action films starring Jō Shishido, while still appearing in films as an actor. His son was the composer Taichirō Kosugi, who did the music for Cyborg 009 
Tokyo March Ikeru ningyō  (生ける人形) (1929)Jinsei gekijō  (人生劇場) (1936)The Daughter of the Samurai Kagirinaki Zenshin Gonin no sekkōhei  (五人の斥候兵) (1938)Robō no ishi  (路傍の石) (1938)Tsuchi Mud and Soldiers The 47 Ronin I Am Waiting  (俺は待ってるぜ, Ore wa matteru ze) (1957)Jazz musume tanjō  (ジャズ娘誕生, Jazu musume tanjō) (1957)A Slope in the Sun Jiruba no tetsu  (ジルバの鉄) (1950)—screenplay by Akira Kurosawa Tokyo gorin ondo  (東京五輪音頭) (1964)Actor 
1968
Yoru no shuyaku (TV Series)  - Doro no umi ni kieta (1968) 
1963
Kiriko no tango   as 
Shun'ichi Ôyagi
1959
Kurutta datsugoku   as 
Fukazawa, policeman
1958
Akai lamp no shûressha  
1958
Towa ni kotaezu - Kanketsu-hen   as 
Chihiro Yamane
1957
Towa ni kotaezu - Seishun-hen   as 
Chihiro Yamane
1957
Jazz musume tanjô   as 
Tôhô Tani
1957
Saigo no totsugeki   as 
Lieutenant general Kagawa
1956
Hungry Soul, Part II   as 
Naokichi Shiba
1956
Hungry Soul   as 
Naokichi Shiba
1956
Kuro obi ujô: Hana to arashi  
1956
The Seven Vows   as 
Hyôbu Chisaka
1955
Zoku: Shishi Maru Ippei  
1955
Zoku shishi maru ippei  
1955
Tasogare sakaba   as 
Moichiro Umeda
1955
Tsuki ni tobu kari   as 
Kôichi (Reiko's father)
1955
Wind and Clouds in the Valley of Shogi  
1954
Yaoya oshichi: Furisode zukiyo  
1954
Gakusei gonin otoko series: Dainibu: Meitan tei shutsudô  
1954
Gakusei gonin otoko series: Daiichibu: Yûrei guntai  
1953
Higeki no shôgun: Yamashita Tomoyuki  
1951
Shinsetsu Ishikawa Goemon  
1951
Nippon G-men: Futekinaru gyakushû  
1951
Gion monogatari: Shun'en  
1950
Sengoku-matoi   as 
Tetsugorô
1950
Ôgonjû   as 
Matayoshi Shishido
1950
Shinju fujin: Shojo no maki  
1949
Gokumon-jima - Kaimei-hen   as 
Shimizu
1949
Gokumon-jima   as 
Police Shimizu
1949
A Face in the Big City  
1949
Shirozukin arawaru   as 
Takazaemon Shioyama
1948
The Limit of Happiness  
1948
Ôshô   as 
Kikuoka - an oculist
1946
Machibôke no onna   as 
Kan'ichi Yamaguchi - captain of Machiho-maru
1944
Yasen gungakutai   as 
Naota taisa
1941
The 47 Ronin   as 
Denpachirô Tamon
1941
Kimi to boku   as 
Ryôhei Kubo
1941
Ai no ikka   as 
Kiyohito Oda
1940
Rekishi: Dai ni-bu - Shôdo kensetsu; Dai san-bu: Reimei Nippon  
1940
Rekishi: Dai ichi-bu - Dôran boshin   as 
Shin'ichirô Katakura
1938
Five Scouts   as 
Platoon leader Okada
1937
Kono chichi ni tsumi ari ya  
1937
Jidai no kiri - Harumi no maki  
1937
Shinjitsu ichiro - Haha no maki   as 
Kyôhei Morikawa
1937
Shinjitsu ichiro - Chichi no maki   as 
Kyôhei Morikawa
1937
Atarashiki tsuchi   as 
Teruo Yamato
1936
Jinsei gekijô   as 
Hyôtarô / Hyôkichi
1935
Midori no chiheisen kohen  
1935
Midori no chiheisen zenpen  
1935
Jûni-ban no seika   as 
Yoshitarô Fukuda
1935
Uramachi no kokyogaku   as 
Chuhei Murayama (Burachu)
1935
Hakugin no ôza - Kôhen   as 
Man in mountain
1935
Hakugin no ôza - Zempen   as 
Man in mountain
1934
Hanasaku ki kôhen emako no maki  
1934
Hanasaku ki zenpen namiko no maki  
1934
Kâwa no ûeno taiyô   as 
Kentaro's father
1934
Kokoro no hatoba   as 
Junsaku Wakasugi
1934
The Jinpu Group   as 
Taneda
1933
Keisatsukan   as 
Itami - a police officer
1932
Daichi ni tatsu: Kohen   as 
Yakichi
1932
Daichi ni tatsu: Zenpen   as 
Yakichi
1931
Mister Nippon - zenpen   as 
Marohiko Ikeda
1931
Umi no nai minato - zenpen  
1931
Mister Nippon - Zengo-hen   as 
Marohiko Ikeda
1930
Kono taiyô - Dai sampen   as 
Kyôtarô Sugiyama
1930
Kono taiyô - dainihen Tamie no maki   as 
Kyôtarô Sugiyama
1930
Kono taiyô - Dai ippen   as 
Kyôtarô Sugiyama
1930
Fujiwara Yoshie no furusato   as 
Higuchi
1929
Tokkyu sambyaku-ri   as 
Yukichi Sakuma
1929
Tôkyô kôshinkyoku   as 
Yukichi Sakuma
1929
Ikeru ningyô   as 
Daisuke Segi
1928
Chikyu wa mawaru: Dai-ichi-bu Kako hen   as 
Shingo Moriyama
1928
Chikyu wa mawaru: Dai-ni-bu Gendai hen   as 
Seiichi Moriyama
1928
Chikyu wa mawaru: Dai-san-bu Kuso hen   as 
Seiichi Moriyama
1928
Hito no isshô - Jinsei banji kane no maki: Dai ippen   as 
Miserly worker
1927
Kekkon nijuso: zenpen  
1927
Tokkan koi no hatsujin  
1926
Chîn hâtsumeî niwakâ narîkin  
1926
Shi no hoko: kôhen   as 
Detective Manabe
1926
Shi no hoko: chuhen   as 
Detective Manabe
1926
Shi no hoko: zenpen   as 
Detective Manabe
Director 
1965
Kaitô X - Kubi no nai otoko  
1964
Gun Demon Without Form  
1962
Kidô sôsa han: Muhô chitai  
1962
Minatô no ryakû datsû mono  
1960
Keiji monogatari: Hankô nanafun mae  
1960
Keiji monogatari: Shirisugita yatsu wa korosu  
1960
Keiji monogatari: Jûsei ni ukabu kao  
1960
Keiji monogatari: Haiiro no bôsô  
1960
Keiji monogatari: Koroshi o agero  
1960
Keiji monogatari: Tôkyô no meiro  
1958
Akai lamp no shûressha  
1957
'Otoko tai otoko' yori: Inochi mo koi mo  
1956
Nayoroiwa: Namida no kantôshô  
1955
Maboroshi kozô no bôken: Niô-zaka no tsuigeki  
1955
Maboroshi kozô no bôken: Tatsu maki no kessen  
1954
Yajikita: Daisanbu: Kiso kaidô no maki  
1954
Yajikita: Daiichibu: Tôkaidô no maki  
1954
Yajikita: Dainibu: Kôyasan no maki  
1954
Gakusei gonin otoko: Daisanbu: Ren'ai jazz band  
1954
Gakusei gonin otoko series: Dainibu: Meitan tei shutsudô  
1954
Gakusei gonin otoko series: Daiichibu: Yûrei guntai  
1951
Gion monogatari: Shun'en  
1950
Kare to kanojo to mei tantei  
1950
Nayamashiki gonin otoko  
1948
Kakute ninjutsu eiga wa owarinu  
Writer 
1960
Keiji monogatari: Tôkyô no meiro  
Self 
1930
Nikkatsu on Parade (Documentary)