Karl Wilhelm Piderit (20 March 1815, in Witzenhausen – 27 May 1875, in Hanau) was a German classical philologist and educator.
From 1833 he studied at the University of Marburg, receiving his doctorate with a dissertation on the rhetorician Hermagoras of Temnos, titled Commentatio De Hermagora rhetora. In 1837 he became an apprentice-teacher at the gymnasium in Hersfeld, and two years later began teaching classes at a grammar school in Marburg. In 1844 he returned to Hersfeld as a teacher, and from 1850 performed similar duties at the gymnasium in Kassel. In 1853 he was appointed director of the Hanau gymnasium, a position he maintained up until his death in 1875.[1][2]