Félix Dominique de Vuillefroy-Cassini (March 2, 1841 – February 1, 1916) was a French painter, engraver and entomologist.
As an entomologist, he collected insects on his travels and the beetles Nebria vuillefroyi and Metadonus vuillefroyanus were named after him while a few new species were described by him.
The beetles Nebria vuillefroyi and Metadonus vuillefroyanus[2] were named after him while he described a few species of bugs including Appasus japonicus.
Vuillefroy-Cassini married Amélie Gélot de Saint-Amey (1844-1901) in 1887 after she separated from the novelist Albert Delpit (1849-1893).
World War I caused a decline in his fortunes and he left his Paris studio that he bought in 1882 and lived at Maisons-Laffitte where he died.