| Professor Ferdinand Lot FBA | Year of birth 1866 | Year of death 1952 | Year elected 1935 | Fellowship category Corresponding |
| Professor Yu M Lotman FBA | Year of birth 1900 | Year of death 1993 | Year elected 1977 | Fellowship category Corresponding |
| Professor John Lough FBA | Year of birth 1913 | Year of death 2000 | Year elected 1975 | Fellowship category UK |
| Professor Harold Love FBA | Year of birth 1948 | Year of death 2007 | Year elected 2003 | Fellowship category Corresponding |
| Professor Elias Avery Lowe FBA | Year of birth 1879 | Year of death 1969 | Year elected 1928 | Fellowship category Corresponding |
| President A Lawrence Lowell FBA | Year of birth 1856 | Year of death 1943 | Year elected 1913 | Fellowship category Corresponding |
| Professor David Lowenthal FBA | Year of birth 1923 | Year of death 2018 | Year elected 2001 | Fellowship category UK |
| Professor J Livingston Lowes FBA | Year of birth 1867 | Year of death 1945 | Year elected 1936 | Fellowship category Corresponding |
| Professor Henry Loyn FBA | Year of birth 1922 | Year of death 2000 | Year elected 1979 | Fellowship category UK |
| Mr John Lucas FBA | Year of birth 1929 | Year of death 2020 | Year elected 1988 | Fellowship category UK |
| Professor Erik Lundberg FBA | Year of birth 1907 | Year of death 1987 | Year elected 1971 | Fellowship category Corresponding |
| Professor David Luscombe | Year of birth 1938 | Year of death 2021 | Year elected 1986 | Fellowship category UK |
| Rt Hon Sir Alfred Lyall KCB, PC, FBA | Year of birth 1835 | Year of death 1911 | Year elected 1903 | Fellowship category UK |
| Sir Charles Lyall FBA | Year of birth 1845 | Year of death 1920 | Year elected 1915 | Fellowship category UK |
| Dr Charles Lyon-Caen FBA | Year of birth 1843 | Year of death 1935 | Year elected 1920 | Fellowship category Corresponding |
| Professor Francis Lyons FBA | Year of birth 1923 | Year of death 1983 | Year elected 1974 | Fellowship category UK |