Nam Joo-hyuk (Korean: 남주혁; born February 22, 1994) is a South Korean model and actor. He began his career as a model, and appeared in several music videos before making his screen debut in 2014 with The Idle Mermaid. He rose to prominence with his role in the television series Who Are You: School 2015 (2015), and has since became notable for his leading roles in Weightlifting Fairy Kim Bok-joo (2016), The Bride of Habaek (2017), The Light in Your Eyes (2019), The School Nurse Files (2020), Start Up (2020), and Twenty-Five Twenty-One (2022) .