Lee You-jin (; born April 6, 1992) is a South Korean actor. He is best known for his role as Kwon Ho-chang in the 2017 television series Hello, My Twenties! 2, and the 2019 drama Be Melodramatic.
Lee You-jin participated in Namoo Actors's "Introduction to Rookies" fan meeting on July 8, 2017, alongside Oh Seung-hoon and Song Kang. Tickets sold out within 30 seconds.
Lee's father is actor Lee Hyo-jung, and actor Lee Ki-young is his paternal uncle.