Lladin
19eg_ganrif
20fed_ganrif
Carolus_Linnaeus
Metr
Gwyddoniaeth
Aristoteles
Technoleg
Hen_Roeg_(iaith)
Y_Chwyldro_Diwydiannol
Bacteria
Esblygiad
Gwobr_Nobel
Albert_Einstein
Isaac_Newton
Charles_Darwin
Leonardo_da_Vinci
Ecoleg
Yr_Oleuedigaeth
Johann_Wolfgang_von_Goethe
Hiliaeth
Galileo_Galilei
Ptolemi
Y_Gymdeithas_Frenhinol
René_Descartes
Maria_Sibylla_Merian
Sigmund_Freud
Benjamin_Franklin
Gottfried_Wilhelm_Leibniz
Archimedes
James_Cook
Marie_Curie
Plinius_yr_Hynaf
Epistemoleg
Alfred_Russel_Wallace
Milltir
Stephen_Hawking
Alcemi
Dull_gwyddonol
Leonhard_Euler
Gwres
Louis_Pasteur
Michael_Faraday
Johannes_Kepler
Nicolaus_Copernicus
Microbioleg
Alan_Turing
Blaise_Pascal
Urdd_y_Sistersiaid
Jonas_Salk
Nikola_Tesla
Cyfnod_Modern_Cynnar
Christiaan_Huygens
Carl_Friedrich_Gauss
Dmitri_Mendeleev
Alexander_Fleming
James_Watt
James_Clerk_Maxwell
Alfred_Nobel
Hippocrates
Niels_Bohr
Galen
Max_Planck
Florence_Nightingale
Richard_Feynman
Y_brodyr_Wright
Robert_Hooke
Awtopsi
Ffatri
Alexander_von_Humboldt
Eratosthenes
Prosiect_Manhattan
John_von_Neumann
Anton_van_Leeuwenhoek
Erwin_Schrödinger
Enrico_Fermi
David_Hilbert
Antoine_Lavoisier
Paracelsus
Michel_Foucault
Linus_Pauling
Robert_Boyle
Francis_Bacon
Karl_Popper
Positifiaeth
André-Marie_Ampère
Francis_Crick
Gregor_Mendel
Joseph-Louis_Lagrange
Christopher_Wren
Oes_y_Darganfod
Muhammad_ibn_Mūsā_al-Khwārizmī
Ernst_Haeckel
Tycho_Brahe
Anacsimandros
Gwireb_(mathemateg)
Auguste_Comte
Etifeddeg
Hanes_y_byd
Paul_Dirac
Emilie_Snethlage
On_the_Origin_of_Species
Thales
James_Dewey_Watson
William_o_Ockham
Edwin_Powell_Hubble
Thomas_Malthus
Richard_Owen
Humphry_Davy
Robert_Koch
William_Thomson,_Barwn_1af_Kelvin
Emanuel_Swedenborg
Ewgeneg
Haearn_gyr
Chwyldro_Gwyddonol
Frederick_Sanger
Andreas_Vesalius
Rhazes
Académie_des_Sciences
Rachel_Carson
Thomas_Young
Jean-Baptiste_de_Lamarck
Ivan_Pavlov
Brahmagupta
Joseph_Priestley
John_James_Audubon
Abacws
Thomas_Hunt_Morgan
Santiago_Ramón_y_Cajal
John_Harrison
Alfred_Kinsey
Christiaan_Hendrik_Persoon
Jakob_Bernoulli
Daniel_Dennett
Paul_Ehrlich
Ronald_Fisher
Mwyndoddi
Erasmus_Darwin
William_Harvey
Adam_Sedgwick
John_Meurig_Thomas
Maurice_Wilkins
Thomas_Henry_Huxley
Rudolf_Virchow
Louis_Agassiz
Ffwrnais_chwyth
Sefydliad_Rockefeller
Robert_Fludd
Ymddygiadaeth
Karl_Landsteiner
Oliver_Smithies
Jacques_Monod
Charles_Scott_Sherrington
John_Eccles
Cylch_Fienna
Irène_Joliot-Curie
Iron_Bridge
Hypatia
Roger_Bacon
Hanes_ffiseg
De_Humani_Corporis_Fabrica
Thomas_Newcomen
Hans_Sloane
Camillo_Golgi
Emil_Theodor_Kocher
William_Buckland
Jöns_Jacob_Berzelius
Mary_Anning
Joseph_Banks
Ambergris
Cadwyn_Bod
William_Smith
John_Maddox
John_Tyndall
George_Wald
Y_Ras_Ofod
Julius_Wagner-Jauregg
Niko_Tinbergen
Daeargoel
Astudiaethau_natur
Theodor_Schwann
Richard_Arkwright
Peter_Medawar
Ragnar_Granit
Inge_Lehmann
Karl_Ernst_von_Baer
António_Egas_Moniz
Hans_Krebs
Albert_Sabin
John_Franklin
Sidney_Gilchrist_Thomas
Clemens_Winkler
Asa_Gray
Henrietta_Swan_Leavitt
Hedy_Lamarr
Hipparchus
Virginia_Apgar
Margaret_Cavendish,_duges_Newcastle-upon-Tyne
Duns_Scotus
Andreas_Libavius
Johannes_Hevelius
Naturalis_historia
Rosalind_Franklin
Henry_Bessemer
William_Conybeare
Franz_Anton_Mesmer
Philosophiae_Naturalis_Principia_Mathematica
E._O._Wilson
William_Gilbert_(ffisegydd)
Maria_Mitchell
Josiah_Wedgwood
George_Graham
Marie-Anne_Pierrette_Paulze
Carlos_Chagas
August_von_Wassermann
Y_Gymdeithas_Ddaearyddol_Frenhinol
William_Withering
Conrad_Gesner
Kitasato_Shibasaburō
Thomas_Lewis_(cardiolegydd)
Richard_Lower
Henri_Dutrochet
Silent_Spring
Chwyldro_Diwydiannol_Cymru
John_Wilkins
Thomas_Wakley
John_Ray
Joseph_Justus_Scaliger
John_Latham
George_Rolleston
Amgueddfa_India,_Calcutta
Zosimos_o_Panopolis
Dynwarededd_Batesaidd
Symbol_alcemegol
Jérôme_Lejeune
Nikolai_Korotkov
Dynwarededd_Müelleraidd
Margaret_Oakley_Dayhoff
Astley_Cooper
John_T._Lewis
Miriam_Rothschild
Gertrude_Scharff_Goldhaber
Hermann_Stieve
Stafford_L._Warren
Thomas_Dick
Julia_Anna_Gardner
Ferdinand_Hoefer
Karine_Chemla
Rose_Marie_Pangborn
Syr_William_Lawrence,_Barwnig_1af