David Langner (born 20 September 1975 in Koblenz) is a German politician serving as mayor of Koblenz since 2018. From 2013 to 2018, he served as state secretary of social affairs, labour, health and demography of Rhineland-Palatinate. From 2006 to 2011, he was a member of the Landtag of Rhineland-Palatinate.