Eduard Ferdinand Geiseler (21 September 1781 in Stettin â 1827) was a German botanist who worked as a medical doctor in Danzig.
He is known for his investigations involving the genus Croton, of which he circumscribed numerous species. In 1807 he published a monograph on the genus, titled Crotonis monographiam.
In 1841 Johann Friedrich Klotzsch named the genus Geiseleria (family Euphorbiaceae) in his honor.