Kim Won-Sim is a professional footballer from PRK and is currently 17 years old. At international level, he features for North Korea U17 Women. His main role on the pitch is Forward.

During the FIFA U17 Women's World Cup 2025 campaign, Kim Won-Sim made 7 appearances, scoring 5 goals and adding 1 assists. He averaged 0.7 goals per match from 0 shots, with 0 on target.