Jung Sung-ryong is a South Korean goalkeeper from Seongnam, Gyeonggi. After developing through Pohang Steelers, he played for Pohang, Seongnam Ilhwa Chunma and Suwon Samsung Bluewings before a long spell with Kawasaki Frontale from 2016 to 2025. He won major honours in Korea and Japan, including the AFC Champions League with Seongnam and multiple J1 League titles with Kawasaki. A senior South Korea international from 2008 to 2016, he joined Fukushima United in 2026.