Kosaku Matsumora (松茂良 興作, Matsumora Kōsaku; 1829 - 1898) was a Ryūkyūan karate master. He studied Tomari-te under Karyu Uku (aka Giko Uku) and Kishin Teruya. He also studied Jigen-ryu. Among Matsumora's students, who went on to influence new generations through students of their own, were Choki Motobu and Chotoku Kyan.
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