Kim Won-Sim is a 17-year-old professional football player from PRK. At the international level, he represents North Korea U17 Women. He plays primarily as a Forward.

In the FIFA U17 Women's World Cup 2025 season, Kim Won-Sim scored 5 goals and provided 1 assists across 7 appearances, averaging 0.7 goals per game with 0 shots attempted and 0 on target.