
Sho Kosugi (born Shōichi Kosugi; June 17, 1947) is a Japanese martial artist with training in shindō jinen-ryū karate who gained popularity as an actor during the 1980s, usually playing a ninja. He is the father of Kane Kosugi and Shane Kosugi. After taking a hiatus from film, he started a taiko group in California. In Japan, he also runs an internationally oriented group of martial arts acting schools known as the Sho Kosugi Institute.
It is common for Kosugi to have his sons co-star in movies when the plot includes family relations. Films in which Kosugi's sons perform alongside their father include Black Eagle, Revenge of the Ninja, and Kabuto (aka Shogun Warrior).

The Godfather Part II
1974 · as Passerby in Coat with Cap Pulled Down (uncredited)

Ninja Assassin
2009 · as Ozunu

Blind Fury
1989 · as The Assassin

Black Eagle
1988 · as Ken Tani

Revenge of the Ninja
1983 · as Cho Osaki

Ninja III: The Domination
1984 · as Yamada

Master Ninja
1984 · as Okasa

Pray for Death
1985 · as Akira Saito

Master Ninja II
1984 · as Okasa

Rage of Honor
1987 · as Shiro Tanka

The Bad News Bears Go to Japan
1978 · as Kata Demonstrator (uncredited)

Dark Society in the East
1993 · as Larry Matsuda

Journey of Honor
1991 · as Daigoro Mayeda

Bruce Lee Fights Back from the Grave
1976

Aloha Summer
1988 · as Yukinaga Konishi

9 Deaths of the Ninja
1985 · as Spike Shinobi

Enter the Ninja
1981 · as Hasegawa

The Master Ninja 5
1985 · as Okasa