Yoo In-na (born June 5, 1982) is a South Korean actress and DJ. After supporting roles in High Kick! Through the Roof (2009-2010) and Secret Garden (2010), she rose to fame as the lead actress in Queen In-hyun's Man (2012), which led to a supporting role in My Love from the Star (2013-2014). She is also the DJ of Let's Crank Up the Volume. Most recently, she starred in Guardian: The Lonely and Great God (2016-2017), one of the highest rated cable television series in South Korea.
At the age of 16, Yoo In-na joined an entertainment agency as an apprentice singer in 1998, and had nearly become part of a girl group. But after 11 years and five different agencies, she could not be prominent. Yoo said she had difficulty memorizing the dance choreography required of K-pop singers, and after practicing for eight hours a day, six days a week, she had resigned from becoming an idol.
In 2006, Yoo joined YG Entertainment as an aspiring actress. She said, "If singing wasn't meant to be, I decided to give acting a go because it seemed fun. I never gave up. A lot of my friends did, though, even though they were prettier and more capable than me." She first came to note in 2009 with the sitcom High Kick Through the Roof on MBC. Several supporting roles followed, notably in the 2010 drama Secret Garden, which she received a Best New Actress award at the Baeksang Arts Awards, and as the second female lead in Hong sisters' romantic comedy The Greatest Love.