Ong Seong-woo (Hangul: 옹 성우, born August 25th, 1995) is a South Korean singer and actor. He is known for his participation in the survival reality show Produce 101 Season 2, where he finished at the fifth position and is a former member of the Wanna One event group.
Ong Seong-woo was born in Incheon, South Korea. He then attended Hanlim Multi Art School, graduating in 2014. He then graduated from Dong Seoul University with a major in performing arts.
