John Mogensen (May 5, 1928 – April 10, 1977) was a Danish singer, songwriter and pianist.
While still a member of the group, he gained popularity as a songwriter and launched a solo career in 1971.
With his rough voice and frank and direct language, he formed a link between traditional pop and folk songs, alternating between direct criticism of society, simple love songs, and reflections from the pub milieu that he knew so well.
Several of his songs remain popular, for example, Der er noget galt i Danmark, Så længe jeg lever, and Fut i fejemøjet.
A biographical movie based on John Mogensen's life, The Way to Mandalay, was released In 2018 with Rasmus Bjerg in the leading role.