Ji Sung (born Kwak Tae-geun on February 27, 1977) is a South Korean actor. He is best known for his roles in the television dramas All In (2003), Save the Last Dance for Me (2004), New Heart (2007), Protect the Boss (2011), Secret Love (2013), and Kill Me, Heal Me (2015).

Kwak first auditioned for the 1999 campus drama KAIST, where he met screenwriter Song Ji-na. Song took an interest in the young upstart and wrote a new character for him, leading to his acting debut. Upon the suggestion of his then-manager, he began using the stage name Chae Ji-sung, then decided to drop the surname “Chae,” and became known simply as “Ji Sung.” After several minor roles, he began playing bigger parts, notably in the television dramas Wonderful Days (also known as Splendid Days, 2001) and Sunshine Hunting (also known as Days in the Sun, 2002), as well as the North-South romantic comedy film Whistling Princess (also known as The Hidden Princess, 2002).

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Doctor JohnCha Yo Han2019
Familiar WifeCha Joo Hyuk2018
DefendantPark Jung Woo2017
EntertainerShin Suk Ho2016
Kill Me, Heal MeCha Do Hyun / Shin Se Gi / Perry Park / Ahn Yo Sub / Ahn Yo Na / Nana / Mysterious X2015
SecretJo Min Hyuk2013
The Great SeerJi Sang2012


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Updated by: Min
Last Update: October 24, 2019