Lee Joon-ik is a South Korean film director and producer. He is best known for directing and producing King and the Clown (2005), one of the highest grossing Korean films of all time. Other notable films include Sunny (2008), Hope (2013), The Throne (2015), Dongju: The Portrait of a Poet (2016), and The Book of Fish (2021).

The King and the Clown is a 2005 South Korean historical drama film starring Kam Woo-sung, Jung Jin-young, and Lee Joon-gi. It was adapted from the 2000 stage play, Yi ("You") about Yeonsangun of Joseon, a Joseon dynasty king and a court clown who mocks him. It was released on 29 December 2005, runs for 119 minutes; and distributed domestically by Cinema Service and internationally by CJ Entertainment.