Lee Seo-hwan (, born March 6, 1973), birth name Lee Young-ki (), is a South Korean actor. He graduated from the Department of German Language and Literature at Incheon National University and made his debut in 2004 with the musical The Hunchback of Notre-Dame. He gained widespread attention for his role as Park Jung-bae in the 2024 Netflix series Squid Game 2.
He was featured in international media following a press event in Taipei alongside fellow cast members Park Gyu-young, Yim Si-wan, Jo Yu-ri, and Kang Ha-neul.