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Um Sang-hyun (Hangul: 엄상현; Hanja: 嚴祥鉉; born December 29, 1971) is a South Korean voice actor who began his career by joining Educational Broadcasting System's voice acting division in 1998. Before making his debut as a voice actor, he used to work in theaters, including performing his roles as a Japanese assassinator and a royal servant in a 1997 South Korean musical The Last Empress and working as the assistant director for South Korean musicals Gaeddongi and Moskito the same year. In 1992, he also appeared in a South Korean independent film called Opening the Closed School Gates.