Lewis David de Schweinitz (13 February 1780 – 8 February 1834) was a German-American botanist and mycologist from Bethlehem, Pennsylvania. Considered the "Father of North American Mycology,"Stuckey, R.L. (1979). Type specimens of flowering plants from Eastern North America in the Herbarium of Lewis David von Schweinitz. Proc. Acad. Nat. Sci. Phil. 131:9-51. he also made significant contributions to botany.
