Kim Ju-sung (Korean: 김주성; born 12 December 2000) is a South Korean footballer who plays as a centre back for FC Seoul and the South Korea national team.

Kim Ju-sung joined FC Seoul in 2019.

[1] Kim Ju-sung was selected to play for the South Korea under-20 team at the 2019 FIFA U-20 World Cup.

Kim Ju-sung was part of the South Korea squad at the 2022 EAFF E-1 Football Championship.

This biographical article related to a South Korean association football defender is a stub.