Lee Suji (Korean: 이수지, RR: I Suji) is an idol and actress. She plays herself and her deceased sister Suah on THE iDOLM@STER.KR. She is a member of Real Girls Project. She is formerly a member of the now disbanded group "THE ARK".
In the survival competition on THE iDOLM@STER.KR she is the leader of the Rookie Team.