Oh Min-seok (오민석; born April 22, 1980) is a South Korean actor known for his versatile performances in television dramas and films. He began his career under the stage name Han Ki-joo (한기주) and has since established himself as a prominent figure in the Korean entertainment industry.

Oh Min-seok made his acting debut in 2006 and quickly gained recognition for his roles in various television dramas and films. He is best known for his performances in popular TV series such as Kill Me, Heal Me (2015), Secrets of Women (2017), and The King in Love (2017). In Secrets of Women, he won the Excellence Award for Actor in a Daily Drama at the 2016 KBS Drama Awards. He also received the Excellence Award for Actor in a Serial Drama at the 2019 KBS Drama Awards for his role in Beautiful Love, Wonderful Life .