Yoon Jin-seo (born Yoon Soo-kyung, 5 August 1983) is a South Korean actress.
Yoon has starred in films such as Oldboy, All for Love, A Good Day to Have an Affair, and Secret Love.
She also appeared in a variety of TV series — historical drama The Return of Iljimae, action comedy The Fugitive: Plan B, and cable romantic comedy 12 Signs of Love.Yoon was a contributing writer at Movieweek magazine, writing 11 articles over the period of 2010 to 2011 under the column ???? ?? ??? ("Yoon Jin-seo's Rolling Paper").In November 2012, Lee signed on to be exclusively managed by FNC Entertainment.