Kang Hye-jung (Korean: 강혜정) is a South Korean actress. Making her film debut in arthouse film Nabi (2001), she rose to stardom and critical acclaim in Park Chan-wook's 2003 revenge thriller Oldboy. A rising star early in her career, she gained acting awards for Han Jae-rim's relationship drama Rules of Dating (2005), and Park Kwang-hyun's Korean War comedy Welcome to Dongmakgol (2005). Following roles as a developmentally disabled daughter in Herb (2007), a suicidal woman in Kill Me (2009), as well as her marriage to Tablo in 2009, Kang began starring in more conventional melodramas in TV and film such as Girlfriends (2009), Miss Ripley (2011), The Wedding Scheme (2012), Lucid Dream (2017) and Jugglers (2017–2018). Her major theatre stints include Korean stage adaptations of Proof (2010) and Educating Rita (2014–2015).