Park Ji-hoon (Korean: 박지훈; born May 29, 1999) is a South Korean singer and actor. Park first made his debut at eight years old as a child actor and advertisement model, appearing as a supporting cast member on the MBC historical drama Jumong (2006) and earning roles in television dramas such as The King and I, Kimchi Cheese Smile and Iljimae. He later debuted as an idol, participating in the reality competition show Produce 101 Season 2, where he finished in second place overall and became a member of the boy group Wanna One. The group achieved both critical and commercial success, with six Korean topped-five singles, more than 3.6 million albums sold, and over 16 endorsements in 2017 alone.