Yoo In-na 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 and I (2012), which led to a supporting role in My Love from the Star (2013-2014). She is also known for her roles in Guardian: The Lonely and Great God (2016–2017), one of the highest rated cable television series in South Korea and Touch Your Heart (2019). Aside from acting, Yoo also ventured into radio. She was the DJ of Let's Crank Up the Volume from 2011-2016.