Friedrich Wilhelm Heidenreich (2 September 1798 in Roßtal – 6 December 1857 in Ansbach) was a German physician.
He was a brother-in-law to archaeologist Joseph Anselm Feuerbach who married his sister Henriette.
From 1817 to 1821, he studied medicine at the University of Würzburg, obtaining his doctorate with a dissertation titled Tubercula in cerebro reperta.
[1] Heidenreich notably took part in the autopsy of Kaspar Hauser, following the latter's mysterious death in December 1833.
As a result of his findings, he published the treatise Kaspar Hauser's Verwundung, Krankheit und Leichenöffnung ("Kaspar Hauser's wounds, illness and autopsy").