Sepp Straffner (31 January 1875 Bad Goisern – 29 October 1952) was an Austrian federal railway official and politician in the Greater German People's Party. He was a pupil at Hallstatt near Salzkammergut, then a student in the Forestry Service at Goisern. He attended high school in Linz. Between 1899 and 1907 he was an official with the Tyrol and Salzburg service of the State Railways at Innsbruck. He went on to study law at the universities of Vienna and Innsbruck (PhD 1913).