Carl Ernst August Weihe (1779–1834) was a German botanist and physician.
Weihe was apprenticed to a pharmacist in Bielefeld, before attending the university at Halle, where he studied medicine and botany, receiving his doctorate in September 1802.
He worked as a doctor at Lüttringhausen (near Remscheid) and Bünde, before moving back to Mennighüffen, where he established a small botanical garden on land owned by his father.
Between 1822 and 1827, Weihe and his collaborator, Christian Gottfried Nees von Esenbeck, a taxonomic botanist, published a monograph of the German brambles, Rubi Germanici descripti et illustrati, in which they described 49 species of Rubus.
Für Botaniker und Oekonomen getrocknet ....[4] The genus Weihea (now treated as a synonym of Geissorhiza)[5] was named in his honour.