
Jean Victor Audouin, sometimes Victor Audouin, was a French naturalist, an entomologist, herpetologist, ornithologist, and malacologist.

Pierre Barrère was a French physician and naturalist.

Jacques Berlioz was a French zoologist and ornithologist, specializing in hummingbirds. He was a grand-nephew of composer Hector Berlioz (1803–1869).

Victor Besaucèle was a French ornithologist.

Félix Biet was a French missionary from Paris Foreign Missions Society and naturalist.

Auguste Boissonneau was a French ornithologist and ocularist. In the latter field he was a pioneer of ocular prosthesis.

Charles Lucien Jules Laurent Bonaparte, 2nd Prince of Canino and Musignano, was a French biologist and ornithologist. Lucien and his wife had twelve children, including Cardinal Lucien Bonaparte.

Louis Augustin Guillaume Bosc was a French botanist, invertebrate zoologist, and entomologist.

Adolphe Boucard was a French ornithologist and trader in specimens who collected extensively in Mexico and Central America. He lived in San Francisco between 1851 and 1852, at the height of the California Gold Rush. He concentrated on collecting hummingbirds, sold scientific bird skins to natural history museums, and supplied the plume trade. He collected birds on expeditions to southern Mexico between 1854 and 1867, and many specimens were sold to P.L. Sclater. By 1865 he had become a foreign corresponding member of the Zoological Society of London. In 1891 he moved to London and set up a taxidermist company, Boucard, Pottier & Co. He published a periodical The Hummingbird (1891–95), which was stopped shortly after he moved to the Isle of Wight in 1894, the same year in which he published Travels of a Naturalist. He died at his son's home in Hampstead in 1905.

Mathurin Jacques Brisson was a French zoologist and natural philosopher.

Georges-Louis Leclerc, Comte de Buffon was a French naturalist, mathematician, cosmologist, and encyclopédiste.

Jacques de Chavigny was a French naturalist who specialised in ornithology and oology. He was, from 1929, on the editorial committee of Alauda, Revue internationale d'Ornithologie fr:Alauda, Revue internationale d'Ornithologie with its founder Paul Paris and Louis Lavauden, Noël Mayaud, Henri Heim de Balsac, Henri Jouard, Jacques Delamain and Paul Poty.

Louis Marie Pantaléon Costa, Marquis de Beauregard was a French statesman, archaeologist, historian and ornithologist.

Jean Léopold Nicolas Frédéric, Baron Cuvier, known as Georges Cuvier, was a French naturalist and zoologist, sometimes referred to as the "founding father of paleontology". Cuvier was a major figure in natural sciences research in the early 19th century and was instrumental in establishing the fields of comparative anatomy and paleontology through his work in comparing living animals with fossils.

Edme-Louis Daubenton was a French naturalist.

Jean Théodore Delacour was an American ornithologist and aviculturist of French origin. He was renowned for not only discovering but also rearing some of the rarest birds in the world. He established very successful aviaries twice in his life, stocked with birds from around the world, including those that he obtained on expeditions to Southeast Asia, Africa and South America. His first aviary in Villers-Bretonneux was destroyed in the First while the second one that he established at Clères was destroyed in the Second World War. He moved to the United States of America where he worked on avian systematics and was one of the founder of the International Committee for Bird Protection. One of the birds he discovered was the imperial pheasant, later identified as a hybrid between the Vietnamese pheasant and the silver pheasant.
Marc Athanase Parfait Œillet des Murs was a French amateur ornithologist and local politician and historian.

René Louiche Desfontaines was a French botanist.

Anselme Gaëtan Desmarest was a French zoologist and author. He was the son of Nicolas Desmarest and father of Eugène Anselme Sébastien Léon Desmarest. Desmarest was a disciple of Georges Cuvier and Alexandre Brongniart, and in 1815, he succeeded Pierre André Latreille to the professorship of zoology at the École nationale vétérinaire d'Alfort. In 1820 he was elected to the Académie Nationale de Médecine.

Charles Antoine Domergue was a French naturalist, ornithologist, herpetologist, spelunker and geologist who spent much of his life in Madagascar. He also dealt with the effects of pollution.
Jean Dorst was a French ornithologist.

Jean-Baptiste Du Tertre was a French blackfriar and botanist.

Charles Henri Frédéric Dumont de Sainte-Croix was a French zoologist.

Joseph Paul Gaimard was a French naval surgeon and naturalist.

Isidore Geoffroy Saint-Hilaire was a French zoologist and an authority on deviation from normal structure. In 1854 he coined the term éthologie (ethology).

Alfred Grandidier was a French naturalist and explorer.

Baron Jean Charles Louis Tardif d'Hamonville, was an eminent French ornithologist and conchologist, and the author of a number of books on natural history. He was mayor of the town and lived at the Château de Manonville. He was the son of Antoine Edouard Tardif d'Hamonville (1797-1865) and Barbe Louise Barrois.

Johann, or Jean, Hermann, or Herrmann, was a French physician and naturalist.

Christian Jouanin was a prominent French ornithologist and expert on petrels. He worked for the Muséum national d'histoire naturelle in Paris and is a former Vice President of the International Union for Conservation of Nature. He has done many major projects in the field, notably with petrels in the Indian Ocean and Madeiras, and has described a number of species.

Henri Louis Ernest Jouard was a French lawyer and World War I soldier who was also an ornithologist. He was, from 1929, on the editorial committee of Alauda, Revue internationale d'Ornithologie fr:Alauda, Revue internationale d'Ornithologie with its founder Paul Paris and Louis Lavauden, Noël Mayaud, Henri Heim de Balsac, Jacques de Chavigny, Jacques Delamain and Paul Poty.

Baron Nöel Frédéric Armand André de Lafresnaye was a French ornithologist and collector.

Philippe-Isidore Picot de Lapeyrouse or La Peirouse, Baron de Lapeyrouse (20 October 1744 in Toulouse – 18 October 1818 in château de Lapeyrouse was a French naturalist.

Jean-Emmanuel-Marie Le Maout was a French naturalist.

Jean-Baptiste Louis Claude Théodore Leschenault de La Tour was a French botanist and ornithologist.

René Primevère Lesson was a French surgeon, naturalist, ornithologist, and herpetologist.

François Levaillant was a French author, explorer, naturalist, zoological collector, and noted ornithologist. He described many new species of birds based on birds he collected in Africa and several birds are named after him. He was among the first to use colour plates for illustrating birds and opposed the use of binomial nomenclature introduced by Carl Linnaeus, preferring instead to use descriptive French names such as the bateleur for the distinctive African eagle.

Guillaume Michel Jérôme Meiffren Laugier was a French ornithologist.

Édouard Ménétries was a French entomologist, zoologist, and herpetologist. He is best known as the founder of the Russian Entomological Society.

Olivier Eugène Prosper Charles Messiaen was a French composer, organist, and ornithologist, one of the major composers of the 20th century. His music is rhythmically complex; harmonically and melodically he employs a system he called modes of limited transposition, which he abstracted from the systems of material generated by his early compositions and improvisations. He wrote music for chamber ensembles and orchestra, vocal music, as well as for solo organ and piano, and also experimented with the use of novel electronic instruments developed in Europe during his lifetime.

Alphonse Milne-Edwards was a French mammalologist, ornithologist and carcinologist. He was English in origin, the son of Henri Milne-Edwards and grandson of Bryan Edwards, a Jamaican planter who settled at Bruges.

Henri Milne-Edwards was an eminent French zoologist.

Martial Étienne Mulsant was a French entomologist and ornithologist.

Abbé René de Naurois was a French Catholic priest, chaplain, and ornithologist.

Victor-Aimé-Léon Olphe-Galliard was a French ornithologist.
Jean-Frédéric Émile Oustalet was a French zoologist.

Paul Paris (1875-1938) was a French naturalist who specialised in ornithology. He was, in 1929, the founder of Alauda, Revue internationale d'Ornithologie fr:Alauda, Revue internationale d'Ornithologie.On the editorial committee were Noël Mayaud, Henri Heim de Balsac, Jacques de Chavigny, Jacques Delamain, Henri Jouard, Louis Lavauden and Paul Poty.

Charles Payraudeau (1798–1865) was a French zoologist.

Jacques Perrin de Brichambaut was a French ornithologist.

Paul Louis Poty was a French naturalist who specialised in ornithology.He was, from 1929, on the editorial committee of Alauda, Revue internationale d'Ornithologie fr:Alauda, Revue internationale d'Ornithologie with its founder Paul Paris and Louis Lavauden, Noël Mayaud, Henri Heim de Balsac, Jacques de Chavigny, Henri Jouard and Jacques Delamain. He was a physician.

Jean René Constant Quoy was a French naval surgeon, zoologist and anatomist.

Jean Louis Florent Polydore Roux was a French painter and naturalist.

Jules Pierre Verreaux was a French botanist and ornithologist and a professional collector of and trader in natural history specimens. He was the brother of Édouard Verreaux and nephew of Pierre Antoine Delalande.

Louis Pierre Vieillot was a French ornithologist.