Johann Gotthelf Fischer von Waldheim (Grigorij Ivanovitsch Fischer von Waldheim (Григорий Иванович Фишер фон Вальдгейм) in Russian) (13 October 1771 – 18 October 1853) was a German and Russian anatomist, entomologist and paleontologist. Fischer was mainly engaged in the classification of invertebrates, the result of which was his Entomographia Imperii Rossici (1820–1851). He also spent time studying fossils from the area around Moscow.
Due to his work studying the insects of Russia, the Russian government granted him nobility as well as the "von Waldheim" ending to his name. (More)