"My Wicked Heart" is a song co-written and co-produced by English singer Diana Vickers. It was digitally released on 17 October 2010 and physically released on 1 November 2010 by RCA Records in the United Kingdom. The track was inspired by indie music including The xx and The Doors and features Vickers playing the trumpet. Vickers performed the single live on the seventh series of The X Factor on 17 October 2010. "My Wicked Heart" received commercial success peaking at number 13 on the UK Singles Chart making it Vickers' second top 20 single. The single is not included on an album due to Vickers leaving the label it was recorded under.

Diana Vickers is an English singer, songwriter and actress. She was semi-finalist on The X Factor in 2008. Vickers signed a record deal with RCA Records and, after touring with her fellow finalists from The X Factor, played the title role in a West End revival of The Rise and Fall of Little Voice.