Jang Moon Bok (장문복; better known as VOK or Moon Vok) is a South Korean rapper under ONO Entertainment. He is a former member of the boy group LIMITLESS. Prior to debuting with LIMITLESS, he debuted as a solo artist on July 1, 2016 with the single "Hiphop President".

He is known for being a former contestant on Superstar K2 and Produce 101 Season 2.