Eugene Séguy (21 April 1890 – 1 June 1985) was a French entomologist and artist who specialised in Diptera. He held a chair of entomology at the Muséum national d'histoire naturelle in Paris from 1956 to 1960. He is also known for establishing the Diptera section at that museum. This entomologist is often confused with a French artist with a similar name: (1877-1951). The latter is known for his pochoir artworks representing plants and insects.