Kang Hye-jeong (Hangul: 강혜정; born January 4, 1982) is a South Korean actress under record label and talent agency YG Entertainment.
Kang made her debut as a magazine model while in her first year of high school in 1997. In the late 1990s she appeared in small roles in TV dramas and sitcoms while studying as a performing arts major at the Seoul Institute of the Arts. She gained notice in the art house film Nabi, but had her breakout role as Mido in the critically acclaimed and commercially successful Oldboy. After numerous awards for Rules of Dating and Welcome to Dongmakgol, she is now recognized as one of the best young actresses in the Korean film industry, and continues to pick risky and quirky characters to play.
She dated Love Phobia costar Jo Seung-woo for three years; the high-profile couple broke up in 2007. Kang married Tablo of Epik High in October 2009. The couple's first child, a daughter, was born on May 2, 2010. YG Entertainment and Tablo announced on the same day that both mother and child are healthy.