Oh Jin-hyek (; , Hanja: 吳真爀; born 15 August 1981) is a South Korean archer. Oh first competed for the Korean national team in 1999, but did not win a major individual international tournament until he won the gold medal in the Men's individual event at the 2012 Summer Olympics, also becoming the first Korean male archer to win an Olympic individual gold medal. With partners Im Dong-hyun and Kim Bub-min, he also finished in third place in the Men's team event. He was the world number one ranked archer from April 2013 to June 2014, winning the individual gold medal at the 2013 Archery World Cup Final and two individual silver medals at the 2011 and 2013 World Championships.
Oh competes for the Hyundai Steel corporate archery team and is known for his distinctive dynamic technique.
Oh won the Men's Team Gold Medal at the 2020 Summer Olympics for Team South Korea. Oh was the 3rd seed in the Olympics Men's Individual but lost in the Round of 16 to Indian archer Atanu Das.