Yosuke Natsuki (Japanese: 夏木陽介, Hepburn: Natsuki Yōsuke, February 27, 1936 – January 14, 2018) was a Japanese actor. He did a lot of work for the Toho Company and made his debut in the film The H-Man. He appeared in Akira Kurosawa's Yojimbo in 1961. In the 1970s, he left Toho and joined Toshiro Mifune's production company. He was famous for his role in the police TV drama G-Men '75 as well as Toho Studios monster movies.
He is also known as Yosuke Natsuki and Yousuke Natsuki.