Jang Hyun-seung (Hangul: 장현승; born September 3, 1989) more commonly known as Hyunseung, is a South Korean idol singer and dancer. He is best known as the lead vocalist and lead dancer of the boy band [artst]Beast, 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.

Hyunseung is also one half of the duo Trouble Maker with Cube labelmate HyunA.

Before his debut with Beast, Hyunseung was a trainee for the boy band Big Bang. He first gained media attention when he appeared in the group's predebut "Big Bang Documentary," along with members G-Dragon, T.O.P, Taeyang, Daesung and Seungri. He appeared in 10 out of 11 episodes, but was cut from the group in a final elimination round.

Hyunseung later met future fellow band member Yang Yo-seob while they were working as dancers for a show performance team. Yoseob convinced Hyunseung to join Cube Entertainment, leading to him debuting with Beast.

Hyunseung released his first solo mini album 'My' on May 8th 2015 which features the title track '니가 처음이야 (Ma First)'. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.