The 2021 Korean Mixed Doubles Curling Championship, Korea's national mixed doubles curling championships, was held July 27 to August 9, 2021 at the Jincheon National Training Centre in Jincheon, South Korea.

They will represent South Korea at the Olympic Qualification Event in hopes of reaching the 2022 Winter Olympics in Beijing, China and the 2021 World Mixed Doubles Qualification Event, attempting to reach the 2022 World Mixed Doubles Curling Championship.

They defeated Jang Yeong-seo and Jeong Byeong-jin (Seoul Federation), who had also qualified through the A-side 10–0 in the final.

[6] Two C Event qualifiers made up the third place game, with Shin Ga-yeong and Park Jun-ha (Jeonbuk B) winning the game 10–3 over reigning mixed doubles champions Kim Ji-yoon and Moon Si-woo (Gyeonggi D).

Through the second round, Kim Min-ji and Lee Ki-jeong dominated the field, winning all seven of their games.

[8] Yang Tae-i and Lee Ki-bok finished second through the round with a 5–2 record, earning themselves four points.

However, due to Kim and Moon having the worst Draw Shot Challenge of the three teams, they finished in fourth.