Filozoflar listesi (I-Q)
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Ernst Laas (1837–1885)[b]
Lucien Laberthonnière (1860–1932)[b]
Jean de La Bruyère (1645–1696)[b]
Jacques Lacan (1901–1981)[a][b][c][e]
Jules Lachelier (1832–1918)[b][d]
Ernesto Laclau (1935–2014)
Philippe Lacoue-Labarthe (1940–2007)[d]
Pierre Laffitte (1823–1903)[a]
Louis de La Forge (1632–1666)[a][d][e]
Imre Lakatos (1922–1974)[b][c][d][e]
André Lalande (1867–1964)[b]
Jean-Baptiste Lamarck (1744–1829)[b][c]
Johann Heinrich Lambert (1728–1777)[a][b][d]
Robert de Lamennais (1752–1854)[b]
Julien Offray de La Mettrie (1709–1751)[a][b][c][d]
François de La Mothe Le Vayer (1588–1672)[b]
Ludwig Landgrebe (1902–1992)[b]
Friedrich Albert Lange (1828–1875)[a][b][d][e]
Susanne Langer (1895–1985)[b][c][d]
Laozi (veya Lao Tzu) (MÖ. 4. yüzyıl)[a][b][c][e]
Isaac La Peyrère (1596–1676)[a][b]
Pierre-Simon Laplace (1749–1827)[a][b][c]
Ivan Ivanovich Lapshin (1870–1952)[b]
François de La Rochefoucauld (1613–1680)[b]
Pierre Laromiguière (1756–1837)[b]
Abdullah Laroui (d. 1935)[b]
Ferdinand Lassalle (1825–1864)[b][d]
Bruno Latour (d. 1947)
Johann Kaspar Lavater (1741–1801)[b]
Louis Lavelle (1883–1951)[b]
Antoine Lavoisier (1743–1794)[b]
Pyotr Lavrov (1823–1900)[b][d]
William Law (1686–1761)[b][d]
Jean Le Clerc (1657–1737)[b][d]
Michèle Le Dœuff (d. 1948)[c][d]
Henri Lefebvre (1901–1991)[d]
Jacques Lefèvre d'Étaples (y. 1455–y. 1536)[e]
Claude Lefort (1924–2010)
Antoine Le Grand (1629–1699)[d][e]
Keith Lehrer (d. 1936)[b][c]
Gottfried Leibniz (1646–1716)[a][b][c][d][e]
Yeshayahu Leibowitz (1903–1994)[d][e]
Vladimir Lenin (1870–1924)[a][b][c][d]
Leonardo da Vinci (1452–1519)[b]
Konstantin Nikolaevich Leont'ev (1831–1891)[b][d]
Aleksei N. Leontiev (1903–1979)
Giacomo Leopardi (1798–1837)[b]
Jules Lequier (1814–1862)[a][b]
Pierre Leroux (1798–1871)[a]
Edouard Louis Emmanuel Julien Le Roy (1870–1954)[b][d]
René Le Senne (1882–1954)[b]
Stanisław Leśniewski (1886–1939)[a][b][c][d][e]
Gotthold Ephraim Lessing (1729–1781)[a][b][c][d]
Leukippos (MÖ. 5. yüzyıl)[a][b][c][d][e]
Emmanuel Levinas (1906–1995)[a][b][c][d][e]
Claude Lévi-Strauss (1908–2009)[c][d]
Lucien Lévy-Bruhl (1857–1939)[b][c]
Kurt Lewin (1890–1947)[a]
Clarence Irving Lewis (1883–1964)[a][b][c][d][e]
Clive Staples Lewis (1898–1963)[a][b][d]
David Kellogg Lewis (1941–2001)[a][b][c][d][e]
Li Ao (722–841)[a][b]
Liang Qichao (veya Liang Ch'i-ch'ao) (1873–1929)[a]
Liang Sou-ming (1893–1988)[a]
Georg Christoph Lichtenberg (1742–1799)[b][c][d]
Arthur Liebert (1878–1946)[b]
Otto Liebmann (1840–1912)[b]
Liezi (veya Lieh Tzu) (y. MÖ. 440 – y. MÖ. 360)[a]
Mikhail Lifshitz (1905–1983)
Linji Yixuan (veya Lin Chi) (y. 810 – 867)[d]
Carl Linnaeus (1707–1778)[d]
Theodor Lipps (1851–1914)[b]
Justus Lipsius (1547–1606)[b][d][e]
Émile Littré (1801–1881)[b]
Liu Şaoçi (veya Liu Shao-ch'i) (1898–1969)[a]
Liu Tsung-chou (veya Ch'i-shan) (1578–1645)[a]
Genevieve Lloyd (d. 1941)[b]
Karl Nickerson Llywelyn (1893–1962)[d]
Ramon Llull (1235–1315)[a][b][d][e]
Alain LeRoy Locke (1885–1954)[e]
John Locke (1632–1704)[a][b][c][d][e]
Alfred Loisy (1857–1940)[b][d]
Petros Lombardos (y. 1100 – 1160)[a][b][d]
Bernard Lonergan (1904–1984)[d]
Sözde-Longinus (1. yüzyıl)[a][b]
Leo Mikhailovich Lopatin (1855–1920)[b]
Frédéric Lordon (d. 1962)
Paul Lorenzen (1915–1995)[d]
Aleksei Fedorovich Losev (1893–1988)[b][d]
Nicholas Onufrievich Lossky (1870–1965)[b][d]
Domenico Losurdo (1941–2018)
Juri Lotman (1922–1993)[b]
Hermann Lotze (1817–1881)[a][b][c][d][e]
Arthur Oncken Lovejoy (1873–1962)[b][c]
Leo Löwenthal (1900–1993)
Michael Löwy (d. 1938)
John R. Lucas (1929–2020)[c]
Samsatlı Lukianos (y. 120 – y. 180)[b][d]
Titus Lucretius Carus (y. MÖ.  99 – 55)[a][b][c][d][e]
Lu Jiuyuan (veya Lu Xiangshan veya Lu Chiu-yuan veya Tzu-ching veya Ts'un-chai) (1139–1193)[a][b][d]
Georg Lukács (1885–1971)[a][b][c][d][e]
Jan Łukasiewicz (1878–1956)[a][b][c][d][e]
Anatoli Lunaçarski (1875–1933)[b]
Martin Luther (1483–1546)[a][b][c][d][e]
Rosa Luxemburg (1871–1919)[d]
William Lycan (d. 1945)[c]
Jean-François Lyotard (1924–1998)[a][b][c][d][e]