Frederick Abel, (1827–1902), English chemist
Philip Hauge Abelson (1913-2004) American chemist, co-discoverer of neptunium
Emil Abderhalden, (1877–1950), Swiss chemist
Richard Abegg, (1869–1910), German chemist
William de Wiveleslie Abney (1843-1920) English chemist, astronomer and photographer
Franz Karl Achard (1753-1821) German chemist
Edward Goodrich Acheson (1856-1931), American chemist, carborundum
Peter Agre, (1949-), American chemist and physician, 2003 Nobel Prize in Chemistry
Arthur Aikin, (1773–1855), English chemist and mineralogist
Adrien Albert, (1907–1989), Australian chemist
Kurt Alder, (1902–1958), German chemist, 1950 Nobel Prize in Chemistry
Sidney Altman, (1939-), 1989 Nobel Prize in Chemistry
Christian B. Anfinsen, (1916–1995), American biochemist, winner of 1972 Nobel Prize in Chemistry
Johan August Arfwedson, (1792-1841), Swedish chemist, discovered lithium
Anton Eduard van Arkel, (1893–1976), famous Dutch chemist
Svante Arrhenius, (1859–1927), Swedish chemist and physicist
Francis William Aston. (1877–1945), 1922 Nobel Prize in Chemistry
Amedeo Avogadro, (1776–1856), Italian physicist
