NRG, acronym for New Radiancy Group (Hangul: 엔알지), was a South Korean pop music group. Originally a five-member boy band consisting of Chun Myung-hoon, Lee Sung-jin, Noh Yoo-min, Moon Sung-hoon, and Kim Hwan-sung (deceased), NRG debuted in 1997 and underwent sporadic periods of activity and hiatus between 2000 and 2008 before going on an extended hiatus. In 2017 they regrouped as a trio to celebrate the 20th anniversary of their debut and released an extended play.