Friedrich Handtke (December 7, 1815 - January 25, 1879) was a German engraver and cartographer active in the second half of the 19th century. Handtke was formally trained as a surveyor in the Prussian army. Following his discharge in 1838 he took a position as the head of cartography at the Glogow publishing house of Carl Flemming. Initially, Handtke, in an attempt to hide his youth inscribed his map publications as "Dr. Karl Sohr". From 1838 to 1874, Handtke and Flemming issued some 260 maps, about 168 of which Handke drew himself. Both Flemming and Handke died in 1879 leaving the powerful Flemming publishing house without its heads. Nonetheless, the firm continued to publish, and republish, well into the 20th century. Glogow, where Handtke was based, is currently part of modern day Poland's Lower Silesian Voivodeship.