Kim Dong-hyun (김동현; born October 20, 2004 ), known professionally as Leehan (이한), is a South Korean singer under KOZ Entertainment. He is a member of the boy group BOYNEXTDOOR.
Known For: Acting
Birthday: 2004-12-20
Place of Birth: Busan, South Korea
Also Known As: Kim Dong-hyun, 김동현, 이한, BOYNEXTDOOR, 보이넥스트도어