John Hassim Lundvik (born 27 January 1983) is a Swedish singer, songwriter, and former sprinter. He was part of the athletic team for IFK Växjö. Engaging later in a musical career, he competed in Melodifestivalen 2018 with the song "My Turn", finishing third in the final.
Lundvik first began his career as an athlete, and was a member of IFK Växjö. He later began pursuing a music career in 2010, composing the song "When You Tell the World You're Mine" for the wedding of Victoria, Crown Princess of Sweden, and Daniel Westling. Lundvik went on to compose music for musicians such as Anton Ewald, Isac Elliot, and Sanna Nielsen, in addition to composing music for the film Easy Money.
In 2016, Lundvik took part in Allsång på Skansen, performing a duet with Lill Lindfors. He took part in Melodifestivalen 2018 with the song "My Turn", in a bid to represent Sweden in Eurovision Song Contest 2018. He qualified from the first semi-final directly to the finals, and finished third overall.