| Professor Martyn Jope FBA | Year of birth 1915 | Year of death 1996 | Year elected 1965 | Fellowship category UK |
| Professor Wilbur Kitchener Jordan FBA | Year of birth 1902 | Year of death 1980 | Year elected 1969 | Fellowship category Corresponding |
| Mr Horace William Brindley Joseph FBA | Year of birth 1867 | Year of death 1943 | Year elected 1930 | Fellowship category UK |
| M Pierre Jouguet FBA | Year of birth 1869 | Year of death 1949 | Year elected 1939 | Fellowship category Corresponding |
| Professor Tony Judt FBA | Year of birth 1948 | Year of death 2010 | Year elected 2007 | Fellowship category Corresponding |
| His Excellancy Jean Jule Jusserand FBA | Year of birth 1855 | Year of death 1932 | Year elected 1911 | Fellowship category Corresponding |