Important scientists

 

G

 Dennis Gabor (1900 - 1979)  engineer  holography
 Daniel Gajdusek (1923 - 2008)  physician  prion disease, kuru

 Galen

(129 - 199?)  early physician  dissection of animals, anatomy

 Galileo Galilei

(1564 - 1642)  scientist  father of astronomy
 Robert Gallo (1937 - )  virologist  retroviruses, HIV causes AIDS

 Francis Galton

(1822 - 1911)  polymath  statistical concepts, eugenics, psychometrics

 George Gamow

(1904 - 1968)  astrophysicist

 Big Bang theory, etc.

 Herbert Gasser (1888 - 1963)  physiologist  nerve fibers, action potentials

 Carl Gauss

(1777 - 1855)  mathematician  algebra and number theory

 Joseph Gay-Lussac

(1778 - 1850)  chemist/physicist  Gay-Lussac's laws of gases; discovered iodine and boron

 Tom Gehrels

(1925 - )  astronomer  asteroids

 Hans Geiger

(1882 - 1945)  physicist  Geiger radioactivity counter
 André Geim (1958 - )  physicist  graphene (with Novoselov)

 Murray Gell-Mann

(1929 - )  physicist  elementary particles and strangeness
 Pierre-Gilles de Gennes (1932 - 2007)  physicist  polymer physics, wetting, adhesion

 Guillaume le Gentil

(1725 - 1792)   astronomer  discovered Messier objects M32, M36 and M38
 Walther Gerlach (1889 - 1979)  physicist  quantum mechanics, Stern-Gerlach experiment (with Stern)
 Andrea Ghez (1965 - )  astronomer  black holes
 Riccardo Giacconi (1931 - )  astrophysicist  solar neutrinos, Homestake experiment (with Davis, Koshiba)
 Ivan Giaever (1929 - )  physicist  electron tunnelling in superconductors (with Esaki, Josephson)
 William Giauque (1895 - 1982)  chemist  chemistry at Absolute Zero

 Josiah Gibbs

(1839 - 190-3)  physicist/mathematician  thermodynamics and vector analysis

 Grove Gilbert

(1843 - 1918)  geologist  geomorphology
 Walter Gilbert (1932 - )  biochemist  nucleotide sequencing, nucleic acids (with Berg, Sanger)

 William Gilbert

(1544 -1603)  physician  father of electrical engineering
 Alfred Gilman (1941 - )  biochemist  G proteins, signal transduction (with Rodbell)
 Vitaly Ginsburg (1916 - 2009)  physicist  condensed matter physics, superconductivity, superfluidity (with Abrikosov, Leggett)
 Donald Glaser (1926 - )  physicist  bubble chamber, sub-atomic particles

 Sheldon Glashow

(1932 - )  theoretical physicist  grand unified theory (with Georgi). electroweak interactions (with Salam, Weinberg)
 Roy Glauber (1925 - )  physicist  optical coherence

 Robert Goddard

(1882 - 1945)  physicist  inventor of liquid-fueled rocket

 Maria Goeppert-Mayer

(1906 - 1972)  physicist  proposed nuclear shell model of atomic nucleus (with Jensen)

 Thomas Gold

(1920 - 2004)  astrophysicist  steady state universe
 Joseph Goldstein (1940 - )  biochemist  regulation of cholesterol steroid metabolism, LDL (with Brown)
 Camillo Golgi (1843 - 1926)  physician  central nervous system, Golgi receptor, Golgi apparatus (with Cajal)
 Jane Goodall (1934 - )  primatologist  chimpanzees, primate behavior

 John Gould

(1804 - 1881)  ornithologist  Darwin's finches

 Stephen Gould

(1941 - 2002)  paleontologist  punctuated equilibrium
 Thomas Graham (1805 - 1869)  chemist  Graham's Law gas diffusion, dialysis
 Ragnar Granit (1900 - 1991)  neurophysiologist  vision, retinal pigments, rhodopsin (with Hartline, Wald)
 Ben Green (1977 - )  mathematician  number theory, combinatorics, prime numbers (with Tao)
 Brian Greene (1963 - )  theoretical physicist  string theory
 Paul Greengard (1925 - )  neuroscientist  dopamine, Parkinson's disease, signal transduction (with Carlsson, Kandel)

 John Gregory

(1864 - 1932)  geologist  glaciers
 Carol Greider (1961 - )  biochemist  telomeres, telomerase (with Blackburn, Szostak)
 Victor Grignard (1871 - 1935)  chemist  Grignard reagent, chemical synthesis (with Sabatier)
 David Gross (1941 - )  physicist  asymptotic freedom, gauge theory, quantum chromodynamics (with Politzer, Wilczek)

 Colin Groves

(1942 - )  anthropologist  primates human evolution
 Robert Grubbs (1942 - )  chemist  olefin metathesis (with Chauvin, Schrock)
 Peter Grünberg (1939 - )  physicist  giant magnetoresistance (with Fert)
 Charles Guillaume (1861 - 1938)  physicist  nickel-steel alloys, invar, elinvar
 Roger Guillemin (1924 - )  biochemist  neurohormones, TRH, GnRH (with Schally)
 Allvar Gullstrand (1862 - 1930)  ophthalmologist  optics, ophthalmology

 Beno Gutenberg

(1889 - 1960)  geologist  earthquake intensity scale (see Richter)

 Johannes Gutenberg

(1398 - 1468)  goldsmith  invented movable typeface for printing

 Alan Guth

(1947 - )  theoretical physicist  cosmic inflation theory