Park Ji-hoon (born May 29, 1999) is a South Korean singer and actor.

He started his career in the entertainment industry as a commercial model and child actor in 2006. In 2017, he rose to fame by placing second in the second season of the reality competition series Produce 101 and becoming a member of the show's resulting boy group Wanna One (2017–2019, 2021–2022). As a solo recording artist, Park has released the EP O'Clock with the lead single "L.O.V.E" in 2019, followed by his debut studio album Message in 2020.