Oh Sang-uk (Korean: 오상욱; born 30 September 1996) is a South Korean right-handed sabre fencer.
Oh is a four-time team Asian champion, 2019 individual Asian champion, three-time team world champion, and 2019 individual world champion.
A three-time Olympian, Oh is a two-time team Olympic champion in 2020 and 2024 and 2024 individual Olympic champion.