Lee Joo-Ahn, is a South Korean actor. He graduated from Mugeo High School and later obtained a bachelor's degree in Acting from Dankook University. At the age of 22, he was exempted from his mandatory military service after he donated 70% of his liver to his mother when she suffered from cirrhosis. He made his debut a few months later with a role in the 2018 drama "Sky Castle". He is represented by YY Entertainment.