Yun Chi-sung (hangul:윤치성, hanja:尹致晟, March 2, 1875, Asan - August 11, 1936) was an Imperial Korean general, politician and independence activist. His nickname was Ahkyeon (악연, 岳淵). He was the uncle of Yun Bo-seon, and the cousin of Yun Chi-ho and Yun Chi-Wang.Yun was studying in Japan and returned his country after being commissioned to shavetail of Imperial Korea. In 1905, he was veterans to the Russo-Japanese War.