Lee Gyu-sung is a professional footballer from KOR and is currently 33 years old. He is on the books of Ulsan HD FC and wears shirt number 24. His main role on the pitch is Midfield. He measures 174cm in height and weighs 68kg. His stronger foot is Right. His estimated market valuation currently stands at 450K €.

His latest transfer saw him join Ulsan HD FC from Suwon Samsung Bluewings via Loan on 2025-12-31.

Over 1 appearances in the Korean K League 1 2026, Lee Gyu-sung contributed 0 goals and 0 assists, completed 0 key passes from 34 total passes, and posted a passing accuracy of 24.