Jang Hyun-seung (; born September 3, 1989) more commonly known as Hyunseung, is a South Korean idolsinger and dancer. He is best known as the vocalist and dancer of the boy bandBeast, under the label Cube Entertainment. With Beast, he has released singles and albums in both Korean and Japanese. Beast won the Artist of the Year (Daesang) award at the Melon Music Awards in 2011.