List of Biologists

George Emil Palade (born 1912), Romanian-American biologist, discoverer of ribosomes, Nobel Prize
Paul Maurice Pallary (1869–1942), French-Algerian malacologist
Peter Simon Pallas (1741–1811), Russian zoologist
Edward Palmer (1829–1911), British botanist
Josif Pancic (1814–1888), Serbian botanist
Paracelsus (1493–1541), German alchemist
Louis Pasteur (1822–1895), French biochemist
William Paterson (1755–1810), British botanist and explorer
Robert Patterson (1802–1872), Irish naturalist
Daniel Pauly (born 1946), French marine biologist
Ivan Pavlov (1849–1936), Russian physiologist, psychologist and physician, discovered conditioning, won the Nobel Prize for his research on the digestive system
Titian Peale (1799–1885), American naturalist
Donald C. Peattie (1898–1964), American botanist
Paul Pelseneer (1863–1945), Belgian malacologist
Jean-Marie Pelt (born 1933), French botanist
Thomas Pennant (1726–1798), Welsh naturalist and antiquary
Henri Perrier de la Bâthie (1873–1958), French botanist
George Perry (naturalist), 19th century English naturalist
Christian Hendrik Persoon (1761–1836), biologist
Paul Petard (1912–1980), French botanist
Wilhelm Peters (1815–1883), German naturalist
Ludwig Karl Georg Pfeiffer, German physician, botanist and conchologist
Rodolfo Amando Philippi (1808–1904), German-Chilean zoologist
Constantine John Phipps (1744–1792), English explorer
David Andrew Phoenix, (born 1966), Biochemist
Frederick Octavius Pickard-Cambridge (1860–?), English entomologist
Octavius Pickard-Cambridge (1828–1917), English entomologist, uncle of above
Charles Pickering (1805–1878), American naturalist
Cándido Bolívar Pieltain (1897–1976), Spanish naturalist
Henry Augustus Pilsbry (1862–1957), American zoologist, malacologist
Gregory Goodwin Pincus (1903–1967), American biologist and co-inventor of the contraceptive pill
Ronald Plasterk, (born 1957), Dutch molecular biologist, columnist and politician
Pliny the Elder (23–79), Roman natural philosopher
Reginald Innes Pocock (1863–1947), British taxonomist (mammals and arachnids)
Felipe Poey (1799–1891), Cuban zoologist
Joel Roberts Poinsett (1779–1851), American botanist
Giuseppe Saverio Poli (1746–1825), Italian physicist, biologist and natural historian
Winston Ponder, Australian malacologist
Arthur William Baden Powell (1901–1987), New Zealand malacologist and paleontologist
Thomas Littleton Powys, 4th Baron Lilford (1833–1896), English ornithologist
Karel Presl (1794–1852), Bohemian botanist
Alice Pruvot-Fol (1873–1972), French malacologist
Jan Evangelista Purkyně (1787–1869), Czech anatomist and physiologist
Frederick Traugott Pursh (1774–1820), German-American botanist
Paul Émile de Puydt (1810–1888), Belgian botanist
Nikolai Przhevalsky (1839–1888), Russian explorer