Yunjin Kim (sometimes credited as Yoon-jin Kim) is a Korean actress best known for her starring role as Sun in the television drama series Lost, from 2004-2010.
She also has a starring role as Dr. Karen Kim, a psychiatrist who was romantically involved with one of her patients whose untimely death throws her life into chaos, in television drama series Mistresses.
At the age of 10, Kim emigrated to the United States with her family. After completing school, Kim moved to New York City to pursue her acting, where she attended and earned her diploma at the New York High School of Performing Arts.
From there, she studied drama at the London Academy of Performing Arts and later earned her acting degree at Boston University. After graduation, Kim devoted herself full time to acting.
She garnered several minor parts on MTV, in soap opera-style dramas on ABC, and on the Broadway stage. In 1996, a Korean TV show filming in Manhattan called and persuaded her to return to her homeland, to appear in the Korean TV drama A Gorgeous Vacation.
This was followed by two other roles in Foreboding and the miniseries Wedding Dress. Then in 1997 she was offered a script for her debut film, Shiri (1999),
Over the next several years, she starred in five additional films. In July 2003, Kim signed a three-year contract with William Morris, an American agency representing Hollywood stars such as Halle Berry, Salma Hayek, Kevin Spacey, Sarah Michelle Gellar, Lucy Liu, Jackie Chan, and Reese Witherspoon.