Seo Min-guk (born September 17, 1991) is a South Korean curler from Yangju, Gyeonggi-do, South Korea.

[1] As the alternate for Jeong Yeong-seok, he represented South Korea at the 2021 World Men's Curling Championship.

After missing the playoffs in 2010, the team won three consecutive silver medals in 2011, 2012 and 2013.

[3] This earned the team the right to represent South Korea at the 2021 World Men's Curling Championship in Calgary, Alberta.

For the championship, the team altered their lineup, bringing Seo in as their alternate.