Here is a list of Atheist Nobel Prize Winners:
Chemistry
Harry Kroto, joint recipient of the 1996 Nobel Prize in Chemistry. Svante Arrhenius
Paul D. Boyer
John Cornforth
Frédéric Joliot-Curie
Irène Joliot-Curie
Richard R. Ernst
Herbert A. Hauptman
Roald Hoffmann
Harold W. Kroto
Jean-Marie Lehn
Peter D. Mitchell
George Andrew Olah
Wilhelm Ostwald
Linus Pauling
Max Perutz
Frederick Sanger
Michael Smith
Harold Urey
Economics
Milton Friedman
John Harsanyi
Friedrich Hayek
John Forbes Nash, Jr.
Amartya Sen
Literature
Jean-Paul Sartre, recipient of the 1964 Nobel Prize in Literature.
Samuel Beckett
Bjørnstjerne Bjørnson
Pearl S. Buck (1938)
Albert Camus
Anatole France
John Galsworthy (1932)
Dario Fo
Nadine Gordimer
Gao Xingjian
Pablo Neruda
Eugene O'Neill
Bertrand Russell
George Bernard Shaw
Jean-Paul Sartre
Wole Soyinka.
John Steinbeck
José Saramago
Peace
Norman Angell (1933)
Klas Pontus Arnoldson (1908)
Mikhail Gorbachev
Linus Pauling
Andrei Sakharov
Elie Wiesel
Physics
Pierre and Marie Curie.
Peter Higgs
Zhores Alferov
Hannes Alfvén
Philip Warren Anderson
John Bardeen
Patrick Blackett
Nicolaas Bloembergen
Niels Bohr
Percy Williams Bridgman
Louis de Broglie
James Chadwick
Subrahmanyan Chandrasekhar
Marie Curie
Pierre Curie
Paul Dirac
Albert Einstein
{Einstein used many labels to describe his religious views, including "agnostic", "religious nonbeliever", and a believer in "Spinoza's God." However, he rejected other labels like "atheist" and "pantheist"}
Enrico Fermi
Richard Feynman
Val Logsdon Fitch
James Franc
Dennis Gabor
Murray Gell-Mann
Vitaly Ginzburg
Roy J. Glauber
Peter Higgs
Gerard 't Hooft
Herbert Kroemer
Lev Landau
Leon M. Lederman
Albert A. Michelson
Konstantin Novoselov
Jean Baptiste Perrin
Isidor Isaac Rabi
C. V. Raman
William Shockley
Erwin Schrödinger
George Smoot
Jack Steinberger
Igor Tamm
Johannes Diderik van der Waals
Eugene Wigner
Physiology or Medicine
Francis Crick.
Rita Levi-Montalcini
Julius Axelrod
Robert Bárány (1914)
George Beadle
J. Michael Bishop
Sydney Brenner
Francis Crick, DNA codiscoverer
Max Delbrück
Christian de Duve
Howard Florey
Camillo Golgi
Andrew Huxley
François Jacob
Paul Lauterbur
Charles Louis Alphonse Laveran
Sir Peter Medawar
Jacques Monod
Thomas Hunt Morgan
Herbert J. Muller
Élie Metchnikoff
Rita Levi-Montalcini
Hermann Joseph Muller
Paul Nurse
Ivan Pavlov
Richard J. Roberts
John Sulston
Albert Szent-Györgyi
Nikolaas Tinbergen
James Watson, DNA codiscoverer