List of Biologists

Valerie Daggett, American bioengineer
Anders Dahl (1751–1789), namesake of the Dahlia
W.H. Dall (1845–1927), American naturalist and malacologist.
Charles Darwin (1809–1882), British naturalist
Erasmus Darwin (1731–1802), doctor, naturalist, grandfather of Charles
Charles Davenport (1866–1944), American biologist and eugenicist, founded the Eugenics Record Office at Cold Spring Harbor Laboratory
Armand David (1826–1900), French zoologist and botanist
Bernard Davis (1916–1994), American biologist
Richard Dawkins (born 1941), British evolutionary biologist
Pierre Antoine Delalande (1787–1823), French naturalist
Max Delbrück (1906–1981), German physicist and biologist known for work on the replication mechanism of viruses
Richard Dell (1920–2002), New Zealand malacologist
Stefano Delle Chiaje (1794–1860), Italian
Paul Émile de Puydt (1810–1888), Belgian botanist
René Louiche Desfontaines (1750–1833), French botanist
Gérard Paul Deshayes (1795–1875), French geologist and conchologist.
Anselme Gaëtan Desmarest (1784–1838), French zoologist
Ernst Dieffenbach (1811–1855), German naturalist
Johann Jacob Dillenius (1684–1747), German botanist
Lewis Weston Dillwyn (1778–1855), British botanist and conchologist
Walter Dobrogosz (born 1933), American microbiologist, discoverer of Lactobacillus reuteri
Theodosius Dobzhansky (1900–1975), American geneticist and evolutionary biologist
Rembert Dodoens (1517–1585), Flemish botanist
Anton Dohrn (1840–1909), German marine biologist
David Don (1799–1841), British botanist
James Donn (1758–1813), English botanist
Jean Dorst (1924–2001), French ornithologist
Henry Doubleday (1808–1875), British entomologist
David Douglas (1799–1834), Scottish botanist
Jonas C. Dryander (1748–1810), Swedish botanist
Félix Dujardin (1802–1860), biologist
Renato Dulbecco (1914–2012), biologist
Ronald Duman, Biological psychiatry
André Marie Constant Duméril (1774–1860), French zoologist
Michel Felix Dunal (1789–1856), French botanist
Robin Dunbar (born 1947), Italian virologist
Gerald Durrell (1925–1995), British naturalist