Jiyoon Kim/ByeongJin Jeong (Seoul, KOR) won 6-4 over Hyerin Kim/Minhyeon Yoo (Gangwon, KOR) in the Final Kim/Jeong advanced directly to the championship game after finishing first in the preliminary round. of the Korean Mixed Doubles National Championship, held July 23 - 31, 2023 in Gangneung, Korea. Jiyoon Kim/ByeongJin Jeong (Seoul, KOR) run at the 2023 Korean Mixed Doubles National Championship came to an end in the semifinals with a 7-3 loss to Kim/Yoo. of the 2023 Korean Mixed Doubles National Championship in Gangneung, Korea; of the 2023 Korean Mixed Doubles National Championship in Gangneung, Korea; and won 8-2 over Hyerin Kim/Minhyeon Yoo (Gangwon, KOR) in the quarterfinals. of the 2023 Korean Mixed Doubles National Championship in Gangneung, Korea;
 
Kim/Jeong finished 6-2 in the 18-team qualifying round. . In their opening game, Kim/Jeong defeated Jisoo Kim/Daeseok Kim (Jeonbuk, KOR) 9-6, then went on to lose 9-6 against Minjae Jung/Hyojun Kim (Gyeongbuk, KOR). Kim/Jeong lost 8-5 to Yujeong Shim/Byeonghyeon Lim (Bongmyung, KOR) where Kim/Jeong responded with a 10-2 win over Yujin Bang/Jeongmin Pyo (Gyeongbuk, KOR). Kim/Jeong won 8-7 against Eunchae Lee/MinWoo Kim (Seoul, KOR), then won 8-2 against Boyeong Lee/Jinhwan Park (Gangwon, KOR) and 8-7 against Bobae Kang/Hongkeon Kim (Gyeonggido, KOR). Kim/Jeong won 13-3 against Yejin Lim/Dongin Lee (Busan, KOR) in their final qualifying round match.
 
. Kim/Jeong gained 69.252 points improving upon their best 2 events, though dropped 26 spots on the World Ranking Standings into 26thplace overall with 69.252 total points. Kim/Jeong ranks 387th overall on the Year-to-Date rankings with 0.000 points earned so far this season.