Wilhelm von Winthem (1799–1847) was a naturalist and entomologist from Hamburg, Germany, who was chiefly interested in Diptera and Hymenoptera.
He purchased huge numbers of insects, concentrating on Diptera, Hymenoptera and Hemiptera.
Kept separately until at least 1880 it was finally incorporated into the main Diptera collections of the Naturhistorisches Museum.
Von Winthem's specimens are identified with a printed label "coll.
Winthem", usually with the species name added and, appropriately, with Wiedemann's or Meigen's handwritten labels.