Erwin Lehn (8 June 1919, Grünstadt – 20 March 2010) was a German jazz composer, bandleader and musician. On 1 April 1951 he established the Südfunk dance orchestra of the South German Radio in Stuttgart, which he directed until 1992. With the start of a new public broadcasting corporation, the Südwestrundfunk, the name of the "Südfunk Tanzorchester" was changed to "SWR Big Band".
