Lee Mu-jin (Korean: 이무진; born December 28, 2000) is a South Korean singer and songwriter.

He rose to fame after appearing on the music audition show Sing Again in 2020, in which he finished in 3rd place.

[2] His 2021 single, "Traffic Light", spent three weeks at number one on South Korea's Gaon Digital Chart.

[3] Since 2022, he is the main host on KBS music web show, LeeMujin Service.

Lee was born in Goyang, Gyeonggi Province, South Korea.