Fleischmannia is a genus of flowering plant in the family Asteraceae.

[3][4] The name honours Gottfried F. Fleischmann (1777–1850), the teacher of Carl Heinrich Schultz at University of Erlangen–Nuremberg.

[8] Fleischmannia species were traditionally included as part of the large Eupatorium, recognized in the broad sense based on achenes with five ribs and a pappus of capillary bristles.

Fleischmannia is distinguished morphologically by having the inner surface of the corolla lobes markedly papillate (requires magnification to see), the carpopodia symmetrical and stopper-shaped, and the involucres small and with 3 series of subimbricate bracts.

A thorough study of Fleischmannia is needed to determine if all of its species are actually distinct and worthy of recognition.