Many Catholics have made significant contributions to the development of science and mathematics from the Middle Ages to today. These scientists include Galileo Galilei,^[1] René Descartes,^[2], Louis Pasteur,^[3] Blaise Pascal, André-Marie Ampère, Charles-Augustin de Coulomb, Pierre de Fermat, Antoine Laurent Lavoisier, Alessandro Volta,^[4] Augustin-Louis Cauchy, Pierre Duhem, Jean-Baptiste Dumas, Alois Alzheimer, and Georgius Agricola.

For additional Catholic scientists, see the List of Catholic churchmen-scientists.

Catholic scientists

• Maria Gaetana Agnesi (1718–1799) – mathematician who wrote on differential and integral calculus
• Georgius Agricola (1494–1555) – father of mineralogy^[5]
• Alois Alzheimer (1864–1915) – credited with identifying the first published case of presenile dementia, which is now known as Alzheimer's disease^[6]
• André-Marie Ampère (1775–1836) – one of the main discoverers of electromagnetism
• Leopold Auenbrugger (1722–1809) – first to use percussion as a diagnostic technique in medicine
• Adrien Auzout (1622–1691) – astronomer who contributed to the development of the telescopic micrometer
• Amedeo Avogadro (1776–1856) – Italian scientist noted for contributions to molecular theory and Avogadro's Law^[7]
• Francisco J. Ayala (1934–present) – Spanish-American biologist and philosopher at the University of California, Irvine^[8][9]
• Stephen M. Barr (1953–present) – professor in the Department of Physics and Astronomy at the University of Delaware and a member of its Bartol Research Institute
• Laura Bassi (1711–1778) – physicist at the University of Bologna and Chair in experimental physics at the Bologna Institute of Sciences, the first woman to be offered a professorship at a European university
• Antoine César Becquerel (1788–1878) – pioneer in the study of electric and luminescent phenomena
• Henri Becquerel (1852–1908) – awarded the Nobel Prize in physics for his co-discovery of radioactivity
• Carlo Beenakker (1960 – present) – professor at Leiden University and leader of the university's mesoscopic physics group, established in 1992.
• John Desmond Bernal (1901–1971) – British pioneer in X-ray crystallography in molecular biology^[10][11]
• Claude Bernard (1813–1878) – physiologist who helped to apply scientific methodology to medicine
• Jacques Philippe Marie Binet (1786–1856) – mathematician known for Binet's formula and his contributions to number theory
• Jean-Baptiste Biot (1774–1862) – physicist who established the reality of meteorites and studied polarization of light
• Giovanni Alfonso Borelli (1608–1679) – often referred to as the father of modern biomechanics
• Raoul Bott (1923–2005) – mathematician known for numerous basic contributions to geometry in its broad sense^[12][13]
• Louis Braille (1809–1852) – inventor of the Braille reading and writing system
• Edouard Branly (1844–1940) – inventor and physicist known for his involvement in wireless telegraphy and his invention of the Branly coherer
• James Britten (1846–1924) – botanist, member of the Catholic Truth Society and Knight Commander of the Order of St. Gregory the Great^[14]
• Hermann Brück (1905–2000) – Astronomer Royal for Scotland from 1957–1975; honored by Pope John Paul II
• Albert Brudzewski (c. 1445–c.1497) – first to state that the Moon moves in an ellipse
• Nicola Cabibbo (1935–2010): Italian physicist, discoverer of the universality of weak interactions (Cabibbo angle), President of the Pontifical Academy of Sciences from 1993 until his death
• Alexis Carrel (1873–1944) – awarded the Nobel Prize in Medicine for pioneering vascular suturing techniques
• John Casey (mathematician) (1820–1891) – Irish geometer known for Casey's theorem
• Giovanni Domenico Cassini (1625–1712) – first to observe four of Saturn's moons and the co-discoverer of the Great Red Spot on Jupiter
• Augustin-Louis Cauchy (1789–1857) – mathematician who was an early pioneer in analysis
• Andrea Cesalpino (c.1525–1603) – botanist who also theorized on the circulation of blood
• Jean-François Champollion (1790–1832) – published the first translation of the Rosetta Stone
• Guy de Chauliac (c.1300–1368) – the most eminent surgeon of the Middle Ages
• Albert Claude (1899–1983) – awarded the Nobel Prize in Medicine for his contributions to cytology
• Mateo Realdo Colombo (1516–1559) – discovered the pulmonary circuit,^[15] which paved the way for Harvey's discovery of circulation
• Arthur W. Conway (1876–1950) – remembered for his application of biquaternion algebra to the special theory of relativity
• Carl Ferdinand Cori (1896–1984) – shared the 1947 Nobel Prize in Physiology or Medicine with his wife for their discovery of the Cori cycle
• Gerty Cori (1896–1957) – biochemist who was the first American woman win a Nobel Prize in science (1947)^[16]
• Gaspard-Gustave Coriolis (1792–1843) – formulated laws regarding rotating systems, which later became known as the Corialis effect
• Charles-Augustin de Coulomb (1736–1806) – physicist known for developing Coulomb's law
• Clyde Cowan (1919–1974) – Co-discoverer of the neutrino
• René Descartes (1596–1650) – father of modern philosophy and analytic geometry
• Johann Peter Gustav Lejeune Dirichlet (1805–1859) – mathematicians who contributed to number theory and was one of the first to give the modern formal definition of a function
• Pierre Duhem (1861–1916) – historian of science who made important contributions to hydrodynamics, elasticity, and thermodynamics
• Jean-Baptiste Dumas (1800–1884) – chemist who established new values for the atomic mass of thirty elements
• John Eccles (1903–1997) – Awarded the Nobel Prize in Medicine for his work on the synapse^[17]
• Stephan Endlicher (1804–1849) – botanist who formulated a major system of plant classification
• Gerhard Ertl (1936–present) – German physicist who won the 2007 Nobel Prize in Chemistry for his studies of chemical processes on solid surfaces^[18]
• Bartolomeo Eustachi (c.1500–1574) – one of the founders of human anatomy
• Hieronymus Fabricius (1537–1619) – father of embryology
• Gabriele Falloppio (1523–1562) – pioneering Italian anatomist who studied the human ear and reproductive organs
• Mary Celine Fasenmyer (1906–1996) – Religious sister and mathematician, founder of Sister Celine's polynomials
• Hervé Faye (1814–1902) – astronomer whose discovery of the periodic comet 4P/Faye won him the 1844 Lalande Prize and membership in the French Academy of Sciences
• Pierre de Fermat (1601–1665) – number theorist who contributed to the early development of calculus
• Enrico Fermi (1901–1954) – awarded the Nobel Prize in physics for his work in induced radioactivity
• Jean Fernel (1497–1558) – physician who introduced the term physiology
• Fibonacci (c.1170–c.1250) – popularized Hindu-Arabic numerals in Europe and discovered the Fibonacci sequence
• Hippolyte Fizeau (1819–1896) – first person to determine experimentally the velocity of light^[19]
• Léon Foucault (1819–1868) – invented the Foucault pendulum to measure the effect of the earth's rotation
• Joseph von Fraunhofer (1787–1826) – discovered Fraunhofer lines in the sun's spectrum
• Augustin-Jean Fresnel (1788–1827) – made significant contributions to the theory of wave optics
• Johann Nepomuk von Fuchs (1774–1856) – confirmed the stoichiometric laws and observed isomorphism and the cation exchange of zeolites^[20]
• Galileo Galilei (1564–1642) – father of modern science^[21]
• Luigi Galvani (1737–1798) – formulated the theory of animal electricity
• William Gascoigne (1610–1644) – developed the first micrometer
• Joseph Louis Gay-Lussac (1778–1850) – chemist known for two laws related to gases
• Riccardo Giacconi (1931–present) – Nobel Prize-winning astrophysicist who laid the foundations of X-ray astronomy
• Paula González (1932–present) – Religious sister and professor of biology
• Peter Grünberg (1939–present) – German physicist, Nobel Prize in Physics laureate^[22]
• Johannes Gutenberg (c.1398–1468) – inventor of the printing press
• Jean Baptiste Julien d'Omalius d'Halloy (1783–1875) – one of the pioneers of modern geology^[23]
• Eduard Heis (1806–1877) – astronomer who contributed the first true delineation of the Milky Way
• Jan Baptist van Helmont (1579–1644) – founder of pneumatic chemistry
• George de Hevesy (1885–1966) – Hungarian radiochemist and Nobel laureate^[24]
• Charles Hermite (1822–1901) – mathematician who did research on number theory, quadratic forms, elliptic functions, and algebra
• John Philip Holland (1840–1914) – developed the first submarine to be formally commissioned by the US Navy
• Antoine Laurent de Jussieu (1748–1836) – first to propose a natural classification of flowering plants
• Mary Kenneth Keller (c.1914–1985) – Sister of Charity and first American woman to earn a PhD in computer science, helped develop BASIC
• Brian Kobilka (1955–present) – American Nobel Prize winning professor who teaches at Stanford University School of Medicine^[25][26]
• René Laennec (1781–1826) – physician who invented the stethoscope
• Joseph Louis Lagrange (1736–1813) – mathematician and astronomer known for Lagrangian points and Lagrangian mechanics
• Jean-Baptiste Lamarck (1744–1829) – French naturalist, biologist and academic whose theories on evolution preceded those of Darwin
• Johann von Lamont (1805–1879) – astronomer and physicist who studied the magnetism of the Earth and was the first to calculate the mass of Uranus
• Karl Landsteiner (1868–1943) – Nobel Prize winner who identified and classified the human blood types
• Pierre André Latreille (1762–1833) – pioneer in entomology
• Antoine Lavoisier (1743–1794) – father of modern chemistry^[27]
• Jérôme Lejeune (1926–1994) – pediatrician and geneticist, best known for his discovery of the link of diseases to chromosome abnormalities
• Jonathan Lunine (1959–present) – planetary scientist at the forefront of research into planet formation, evolution, and habitability; serves as vice-president of the Society of Catholic Scientists^[28]
• Marcello Malpighi (1628–1694) – father of comparative physiology^[29]
• Étienne-Louis Malus (1775–1812) – discovered the polarization of light
• Anna Morandi Manzolini (1714–1774) – anatomist and anatomical wax artist who lectured at the University of Bologna
• Giovanni Manzolini (1700–1755) – anatomical wax artist and Professor of anatomy at the University of Bologna
• Guglielmo Marconi (1874–1937) – father of wireless technology and radio transmission
• Pierre Louis Maupertuis (1698–1759) – known for the Maupertuis principle and for being the first president of the Berlin Academy of Science
• Michele Mercati (1541–1593) – one of the first to recognize prehistoric stone tools as man-made
• Charles W. Misner (1932–present) – American cosmologist dedicated to the study of general relativity
• Kenneth R. Miller (1948–present) – American cell biologist and molecular biologist who teaches at Brown University^[30]
• Mario J. Molina (1943–present) – Mexican chemist, one of the precursors to the discovery of the Antarctic ozone hole (1995 Nobel Prize in Chemistry)
• Peter Joseph Moloney (1891–1989) – Canadian immunologist and pioneering vaccine researcher, who worked out the first large-scale purification of insulin in 1922; International Gairdner Award, 1967)^[31]
• Gaspard Monge (1746–1818) – father of descriptive geometry
• John J. Montgomery (1858–1911) – American physicist and inventor of gliders and aerodynamics
• Giovanni Battista Morgagni (1682–1771) – father of modern anatomical pathology^[32]
• Johannes Peter Müller (1801–1858) – founder of modern physiology^[33]
• Joseph Murray (1919–2012) – Nobel Prize in Medicine laureate^[34]
• John von Neumann (1903–1957) – Hungarian-born American mathematician and polymath^[35] who converted to Catholicism^[36]
• Martin Nowak (1965–present) – evolutionary theorist and Director of the Program for Evolutionary Dynamics at Harvard University; serves on the board of the Society of Catholic Scientists^[37]
• Karin Öberg (1982–present) – her Öberg Astrochemistry Group discovered the first complex organic molecule in a protoplanetary disk; serves on the board of the Society of Catholic Scientists^[38]
• Abraham Ortelius (1527–1598) – created the first modern atlas and theorized on continental drift
• Blaise Pascal (1623–1662) – French mathematician, physicist, inventor, writer and philosopher
• Louis Pasteur (1822–1895) – father of bacteriology^[3][39]
• Pierre Joseph Pelletier (1788–1842) – co-discovered strychnine, caffeine, quinine, cinchonine, among many other discoveries in chemistry^[40]
• Georg von Peuerbach (1423–1461) – called the father of mathematical and observational astronomy in the West^[41]
• Michael Polanyi (1891–1976) – Hungarian polymath, made contributions to physical chemistry, economics, and philosophy
• Vladimir Prelog (1906–1998) – Croatian-Swiss organic chemist, winner of the 1975 Nobel Prize for chemistry
• Santiago Ramón y Cajal (1852–1934) – awarded the Nobel Prize for his contributions to neuroscience
• René Antoine Ferchault de Réaumur (1683–1757) – scientific polymath known especially for his study of insects
• Francesco Redi (1626–1697) – his experiments with maggots were a major step in overturning the idea of spontaneous generation
• Henri Victor Regnault (1810–1878) – chemist with two laws governing the specific heat of gases named after him^[42]
• Gregorio Ricci-Curbastro (1853–1925) – one of the founders of tensor calculus
• Gilles de Roberval (1602–1675) – mathematician who studied the geometry of infinitesimals and was one of the founders of kinematic geometry
• Frederick Rossini (1899–1990) – Priestley Medal and Laetare Medal-winning chemist^[43]
• Paul Sabatier (chemist) (1854–1941) – awarded the Nobel Prize in Chemistry for his work improving the hydrogenation of organic species in the presence of metals
• Adhémar Jean Claude Barré de Saint-Venant (1797–1886) – Remembered for Saint-Venant's principle, Saint-Venant's theorem, and Saint-Venant's compatibility condition; given the title Count by Pope Pius IX in 1869
• Theodor Schwann (1810–1882) – founder of the theory of the cellular structure of animal organisms
• Ignaz Semmelweis (1818–1865) – early pioneer of antiseptic procedures, discoverer of the cause of puerperal fever
• Louis Jacques Thénard (1777–1857) – discovered hydrogen peroxide and contributed to the discovery of boron^[44]
• Evangelista Torricelli (1608–1647) – inventor of the barometer
• Paolo dal Pozzo Toscanelli (1397–1482) – Italian mathematician, astronomer and cosmographer
• Richard Towneley (1629–1707) – mathematician and astronomer whose work contributed to the formulation of Boyle's Law
• Louis René Tulasne (1815–1885) – biologist with several genera and species of fungi named after him
• Louis Nicolas Vauquelin (1763–1829) – discovered the chemical element beryllium
• Urbain Le Verrier (1811–1877) – mathematician who predicted the discovery of Neptune
• Andreas Vesalius (1514–1564) – father of modern human anatomy
• François Viète (1540–1603) – father of modern algebra^[45]
• Leonardo da Vinci (1452–1519) – Renaissance anatomist, scientist, mathematician, and painter
• Vincenzo Viviani (1622–1703) – mathematician known for Viviani's theorem, Viviani's curve and his work in determining the speed of sound
• Alessandro Volta (1745–1827) – physicist known for the invention of the battery^[4]
• Wilhelm Heinrich Waagen (1841–1900) – geologist and paleontologist who provided the first example of evolution described from the geologic record, after studying Jurassic ammonites^[46]
• Karl Weierstrass (1815–1897) – often called the father of modern analysis^[47]
• E. T. Whittaker (1873–1956) – English mathematician who made contributions to applied mathematics and mathematical physics
• Johann Joachim Winckelmann (1717–1768) – one of the founders of scientific archaeology
• Bertram Windle (1858–1929) – anthropologist, physician, and former president of University College Cork
• Jacob B. Winslow (1669–1760) – convert to Catholicism who was regarded as the greatest European anatomist of his day ^[48]
• Antonino Zichichi (1929–present) – Italian nuclear physicist, former President of the Istituto Nazionale di Fisica Nucleare^[49][50]