William Ramsay, (1852-1916), Scottish chemist, winner of 1904 Nobel Prize in Chemistry
Marij Rebek, chemist
Henri-Victor Regnault (1810-1878), French physical chemist
Ferdinand Reich (1799-1882) German chemist, co-discoverer of indium
Tadeus Reichstein, (1897–1996), Polish born Swiss chemist, winner of 1950 Nobel Prize in Physiology or Medicine
Stuart A. Rice, (born 1932), physical chemist
Ellen Swallow Richards, (1842–1911), industrial and environmental chemist
Theodore William Richards (1868-1928) American chemist, winner of 1914 Nobel Prize in Chemistry
Hieronymus Theodor Richter (1824-1898) German chemist, co-discoverer of indium
Jeremias Benjamin Richter (1762–1807), German chemist
Andrés Manuel Del Rio (1764-1849) Spanish mineralogist, discovered vanadium
Robert Robinson (1886-1975) English chemist, winner of 1947 Nobel Prize in Chemistry
Martin Rodbell (1925-1998) American biochemist, winner of 1994 Nobel Prize in Medicine
Irwin Rose (1926- ) American biochemist, winner of 2004 Nobel Prize in Chemistry
William Cumming Rose (1887-1958) American biochemist
Guillaume François Rouelle (1703-1770) French chemist
F. Sherwood Rowland (1927- ) American chemist, winner of 1995 Nobel Prize in Chemistry
Friedlieb Ferdinand Runge (1795-1867) German chemist
Daniel Rutherford (1749-1819) Scottish chemist, discovered and isolated nitrogen
Ernest Rutherford (1871-1937), Father of Nuclear Physics, 1908 Nobel Prize in Chemistry
Lavoslav Stjepan Ružička, (1887–1976), 1939 Nobel Prize in Chemistry
