Sin Eui-hyun (born April 1, 1980) is a South Korean male cross-country skier and biathlete.

[2][3] He made his Paralympic debut for South Korea during the 2018 Winter Paralympics and claimed the nation's first Paralympic medal during the 2018 Winter Paralympics after clinching a bronze medal in the men's 20km sitting cross-country skiing event.

[4][5][6] Sin Eui-hyun created history after claiming South Korea’s first ever gold medal in their Winter Paralympics history, during the 2018 Winter Paralympics after emerging as the winner of the men's 7.5km classical sitting cross-country skiing event.

[7][8] He was also selected as the flagbearer for South Korea during the 2018 Winter Paralympics opening ceremony as he represented the home nation, South Korea in the 2018 Winter Paralympics Parade of Nations.

[9][10] In 2022, he won the silver medal in the men's long-distance sitting cross-country skiing event at the 2021 World Para Snow Sports Championships held in Lillehammer, Norway.