Hwang Yoon-seok, better known as Hwanhee, is a South Korean singer, actor and a member of South Korean R&B duo Fly to the Sky.

Fly to the Sky is a South Korean R&B duo consisting of Brian Joo and Hwanhee. Initially marketed as K-pop idols, the duo later developed a more mature image and became one of the most popular R&B groups in South Korea. The duo has released nine studio albums since its debut in 1999.