Yoon Sang-hyun (윤상현) is a South Korean actor and singer born on September 21, 1973. Debuting in 2005, he gained widespread public recognition through his roles in television series such as Queen of Housewives (2009), My Fair Lady (2009), and Secret Garden (2010). Known for his versatile performances across romance, comedy, and drama, Yoon has starred in major television series including I Can Hear Your Voice (2013), Gap-dong (2014), Shopping King Louie (2016), 18 Again (2020), and Namib (2024). His feature film credits include Tone-Aat Couple (2012), A Dynamite Family (2014), and Miss & Mrs. Cops (2019).