Johann Stegner (20 December 1866, Frohnlach, Saxe-Coburg and Gotha – 7 January 1954, Coburg, Bavaria, West Germany) was a German politician from the Social Democratic Party of Germany (SPD).
Johann Stegner, the son of a construction worker, was born on 20 December 1866 in Frohnlach, District of Sonnefeld, in the Duchy of Saxe-Coburg and Gotha but he was raised in Scheuerfeld, then a village west of Coburg, in the same Duchy.
In 1909 he was a board member and full-time treasurer of the local consumer cooperative.
Around 1890 Johann Stegner joined the Social Democratic Party of Germany, for which he ran for election to the Ducal Parliament of Saxe-Coburg and Gotha in 1908 and 1912.
From 19 March 1920 until the election on 7 November 1920, initially in an advisory capacity, he represented the Coburger Land with Hermann Mämpel and Hans Woldemar Schack in the Landtag of Bavaria.