Lee Yu-jun (; born 26 September 1989) is a South Korean professional footballer who plays as a defensive midfielder for Liga 2 side Sumsel United.
He was also known as Lee Jong-in both in Brazil and South Korea before he changed his name legally to Lee Yu-jun.
Born in South Korea, he lived in Brazil for 9 years since 2002 and played football there for 5 years. He started his professional career in 2007. On 17 August 2016, he decided to sign a contract with Bhayangkara. On 9 May 2022, Lee was signed for Madura United to play in Liga 1 in the 2022âÂÂ23 season.
Born and raised in South Korea, he acquired Indonesian citizenship in 2022.