| Professor Wassily Leontief FBA | Year of birth 1900 | Year of death 1999 | Year elected 1970 | Fellowship category Corresponding |
| Professor Abba Lerner FBA | Year of birth 1903 | Year of death 1982 | Year elected 1980 | Fellowship category Corresponding |
| Abbe Jules Leroy FBA | Year of birth 1903 | Year of death 1979 | Year elected 1978 | Fellowship category Corresponding |
| Professor Dr Albin Lesky FBA | Year of birth 1896 | Year of death 1981 | Year elected 1966 | Fellowship category Corresponding |
| Sir Michael Levey LVO, FBA | Year of birth 1927 | Year of death 2008 | Year elected 1983 | Fellowship category UK |
| Professor Giorgio Levi Della Vida FBA | Year of birth 1886 | Year of death 1967 | Year elected 1967 | Fellowship category Corresponding |
| Professor Claude Levi-Strauss FBA | Year of birth 1908 | Year of death 2009 | Year elected 1966 | Fellowship category Corresponding |
| Dr David Levin FBA | Year of birth 1918 | Year of death 2022 | Year elected 1993 | Fellowship category Corresponding |
| Professor Harry Levin FBA | Year of birth 1912 | Year of death 1994 | Year elected 1982 | Fellowship category Corresponding |
| Professor Henri Lévy-Ullmann FBA | Year of birth 1870 | Year of death 1947 | Year elected 1936 | Fellowship category Corresponding |
| Sir Arthur Lewis FBA | Year of birth 1915 | Year of death 1991 | Year elected 1974 | Fellowship category Corresponding |
| Professor Bernard Lewis FBA | Year of birth 1916 | Year of death 2018 | Year elected 1963 | Fellowship category UK Emeritus |
| Professor Claude I Lewis FBA | Year of birth 1900 | Year of death 1900 | Year elected 1948 | Fellowship category Corresponding |
| Professor Clive Staples Lewis FBA | Year of birth 1898 | Year of death 1963 | Year elected 1955 | Fellowship category UK |
| Professor David Lewis FBA | Year of birth 1941 | Year of death 2001 | Year elected 1992 | Fellowship category Corresponding |
| Professor David Lewis FBA | Year of birth 1928 | Year of death 1994 | Year elected 1973 | Fellowship category UK |