BOYNEXTDOOR (보이넥스트도어) is a six-member South Korean group formed under KOZ Entertainment. The group consists of six members: MYUNG JAEHYUN, SUNGHO, RIWOO, TAESAN, LEEHAN, and WOONHAK. The group aims to present a friendly and approachable atmosphere with their music, reminding listeners of a neighborhood “boy next door.”

BOYNEXTDOOR debuted on May 30, 2023, with the album WHO! and lead single “Serenade.” Music videos for their tracks “But I Like You” and “One and Only” were pre-released a few days ahead of their official debut.

They’ve made their first comeback with the album WHY.. on September 4, 2023, which included three new songs alongside tracks from the album WHO!.