Actress who has gained fame for her career in South Korean film, including the 2003 thriller and cult favorite Oldboy as Lee Soo-ah. She was nominated for the 2009 Baeksang Arts Awards for most popular film actress for her work in The Moonlight of Seoul.
She made her film debut in the 2001 South Korean movie A Perfect Day. She broke through to wider acclaim with her role in 2003's Oldboy.
She won the 2003 Korean Film Award for best supporting actress for her work in Oldboy. She provided Korean dubbing for the main character in the 2017 hit Pixar film Coco.
She was married in 2017. She has one sister named Yoon Seong-kyeong.
She and Choi Min-sik starred together in the 2003 film Oldboy.