Ju Ji-hoon is a South Korean actor and model. His first leading role was in the Princess Hours (2006). His other notable works include Lucifer (2007), Antique (2008), Mask (2015), Along with the Gods: The Two Worlds (2017), Along with the Gods: The Last 49 Days (2018), The Spy Gone North (2018), Dark Figure of Crime (2018), Kingdom (2019–2020) and Jirisan (2021).

Princess Hours is a 2006 South Korean television series, starring Yoon Eun-hye, Ju Ji-hoon, Kim Jeong-hoon and Song Ji-hyo. It is based on Korean manhwa Goong by Park So-hee. It aired on MBC from January 11 to March 30, 2006, on Wednesdays and Thursdays at 21:55 for 24 episodes.