Creighton Williams Abrams (1914 - 1974)

John Joseph Abercrombie (1798 - 1877)

William H. Abendroth (1895 - 1970)

Walter Abel (1898 - 1987)

Joseph Carter Abbott (1825 - 1881)

Sir James Abbott (1807 - 1896)

Ira Coray Abbott (1824 - 1908)

Henry Livemore Abbott (1842 - 1864)

Anderson Ruffin Abbott (1837 - 1913)

Henry Larcom Abbott (1831 - 1927)

Harold Robert Aaron (1921 - 1980)

Barbaro (2003 - 2007)

Assault (1943 - 1971)

Arkle (1957 - 1970)

Alydar (1975 - 1990)

Affirmed (1975 - 2001)

Dr. Ernst F.W. Alexanderson (1878 - 1975)

George Biddell Airy (1801 - 1892)

David Hayes Agnew (1818 - 1892)

Louis Agassiz (1807 - 1873)

Elizabeth Cary Agassiz (1822 - 1907)

Charles Adler Jr. (1899 - 1980)

Thomas Addison (1793 - 1860)

Joy Adamson (1910 - 1980)

John Couch Adams (1819 - 1892)

Rudolph Ackermann (1764 - 1834)

Dr Franz Carl Achard (1753 - 1821)

Robert Abplanalp (1922 - 2003)

Niels Henrik Abel (1802 - 1829)

Frederick Augustus Abel (1827 - 1902)