Sung-jun Yoon is a professional footballer from JPN and is currently 20 years old. He is on the books of Kyoto Sanga and wears shirt number 25. His main role on the pitch is Midfield. He measures 170cm in height and weighs 67kg. His estimated market valuation currently stands at 400K €.

His latest transfer saw him join Kyoto Sanga from Kyoto Sanga U18 via on 2025-08-01.

Over 2 appearances in the Japanese J1 League 2026, Sung-jun Yoon contributed 0 goals and 0 assists, completed 0 key passes from 42 total passes, and posted a passing accuracy of 17.5.