Yoon Jun-seo is a professional footballer from KOR and is currently 17 years old. At international level, he features for South Korea U15. His main role on the pitch is Midfield.

Over 3 appearances in the EAFF U15 Men's Championship 2025, Yoon Jun-seo contributed 0 goals and 0 assists, completed 0 key passes from 0 total passes, and posted a passing accuracy of -.