Acting
Riwoo
October 22 2003- Place of birth: Seoul, South Korea
- Gender: Male
- Also known as: Lee Sang-hyeok, 이상혁, 리우, BOYNEXTDOOR, 보이넥스트도어
Lee Sang-hyeok (이상혁; born October 22, 2003), known professionally as Riwoo (리우), is a South Korean singer and dancer under KOZ Entertainment. He is a member of the boy group BOYNEXTDOOR.
