Étienne-Laurent-Joseph-Hippolyte Boyer de Fonscolombe (22 July 1772, Aix-en-Provence – 13 February 1853, Aix) was a French entomologist who specialised in Coleoptera and Hymenoptera and pest insects.
With the death of his father in 1810, he rented a floor of the hotel of Aix and the couple lived with his mother, who found him "Entomologiste très remarquable avec l’intelligence, la bonté, la vertu et le savoir" (a remarkable entomologist with intelligence, kindness, virtue and knowledge).
Hippolyte and his brother Marcellin de Fonscolombe never ceased occupying themselves with the natural sciences "like those of antiquity and on medals".
From 1833, he entrusted the management of the Fonscolombe estates to his son-in-law, Adolphe de Saporta, and in 1848 he sold Montvert when it was left to his wife.
Much of his collection is in the Muséum national d'histoire naturelle in Paris and there are some Apoidea in the Hope Department of Entomology in Oxford.