Kinzō Shin (信欣三, Shin Kinzō, 30 March 1920 – 28 October 1981) was a Japanese stage and film actor.

[1] Between the early 1930s and late 1980s, he appeared in over 80 films by directors such as Masaki Kobayashi, Kon Ichikawa, Kaneto Shindō, Tadashi Imai and Yasuzō Masumura.

[1] After graduating from Tokyo Prefectural First Commercial School (now Tokyo Metropolitan Daiichi Commercial High School), he first joined the Toho Sayoku Gekijo before becoming a co-founder of the Shinkyo Gekidan, both left-wing theatre groups.

[1] Following the forced dissolution of the Shinkyo Gekidan by the authorities, he formed the Mizuho Gekidan company together with Jūkichi Uno and others.

[1] After World War II, he was active in the Mingei Theatre Company and the Haiyuza Theatre Company.