| Professor Pierre Amandry FBA | Year of birth 1912 | Year of death 2006 | Year elected 1978 | Fellowship category Corresponding |
| Revd Professor George Anderson FBA | Year of birth 1913 | Year of death 2002 | Year elected 1972 | Fellowship category UK |
| Sir Norman Anderson OBE, QC, FBA | Year of birth 1908 | Year of death 1994 | Year elected 1970 | Fellowship category UK |
| Dr Carl Ingvar Andersson FBA | Year of birth 1899 | Year of death 1974 | Year elected 1971 | Fellowship category Corresponding |
| Professor Antony Andrewes MBE, FBA | Year of birth 1910 | Year of death 1990 | Year elected 1957 | Fellowship category UK |
| Professor Kenneth Andrews FBA | Year of birth 1921 | Year of death 2012 | Year elected 1986 | Fellowship category UK |
| Professor Gertrude Anscombe FBA | Year of birth 1919 | Year of death 2001 | Year elected 1967 | Fellowship category UK |
| Rt Hon Sir William Anson PC, FBA | Year of birth 1843 | Year of death 1914 | Year elected 1902 | Fellowship category UK |
| Professor Alexander Anton CBE, FBA | Year of birth 1922 | Year of death 2011 | Year elected 1972 | Fellowship category UK Emeritus |
| Professor Joyce Appleby FBA | Year of birth 1929 | Year of death 2016 | Year elected 2001 | Fellowship category Corresponding |
| Professor Vincenzo Arangio-Ruiz FBA | Year of birth 1884 | Year of death 1964 | Year elected 1959 | Fellowship category Corresponding |
| Professor Arthur Arberry FBA | Year of birth 1905 | Year of death 1969 | Year elected 1949 | Fellowship category UK |
| Professor Arthur Armstrong FBA | Year of birth 1909 | Year of death 1997 | Year elected 1970 | Fellowship category UK |
| Professor David Armstrong FBA | Year of birth 1926 | Year of death 2014 | Year elected 1998 | Fellowship category Corresponding |
| Mr Edward Armstrong FBA | Year of birth 1846 | Year of death 1928 | Year elected 1905 | Fellowship category UK |
| Professor Denis Arnold CBE, FBA | Year of birth 1926 | Year of death 1986 | Year elected 1976 | Fellowship category UK |