Mentor Johnson Samuel Johnson Harry Hamilton Johnston Ernest Jones David Starr Jordan Théodore Simon Jouffroy Benjamin Jowett Benito Pablo Juárez Mark Hayler Judge Franz Wilhelm Junghuhn K Alexander Kadison () Marcus Kalisch Albert Kalthoff Henry Home, Lord Kames Immanuel Kant Otto Karmin () Karl Johann Kautsky Augustus Henry Keane Charles Francis Keary ( several refs to him mainly in refs) John Keats Charles Samuel Keene George Keith, 10th Earl Marischal James Francis Edward Keith Johan Henric Kellgren William Kenrick Ellen Key Cassius Jackson Keyser Alexander Lange Kielland Søren Aaby Kierkegaard Peter King, 1776–1833 () Alexander William Kinglake George Henry Kingsley ( brother of Charles Kingsley) Mary Henrietta Kingsley Hermann Klaatsch Heinrich von Kleist Abner Kneeland Otto Knopf ( see the eponymous Knopfia asteroid) Robert Knox James Knowles Matthias Knutzen Hermann Kolbe Selig Korn ( see this) Ernst Ludwig Krause () Karl Christian Friedrich Krause Franz Krejei () Arnold Krekel Pyotr Kropotkin M Ma James Macartney (anatomist) Joseph McCabe William Maccall Mauro Macchi ( see :it:Mauro Macchi) Eugene Montague Macdonald () George Everett Macdonald () Ernst Waldfried Josef Wenzel Mach Bernardino Machado Charles Mackay (author) Robert William Mackay ( see :s:Mackay, Robert William (DNB00)) John Stuart Mackenzie Sampson Arnold Mackey () James Mackintosh John M'Taggart Ellis M'Taggart Imre Madách James Madison Johann Heinrich von Mädler Maurice Polydore Marie Bernard Maeterlinck Jean Hyacinthe de Magellan Frederic William Maitland Arthur François Ève Maillot François de Malherbe David Mallet (writer) Benoît Malon Hector Henri Malot Conrad Malte-Brun Terenzio Mamiani della Royere Bernard Mandeville Willem Christiaan van Manen Mangasar Mugurditch Mangasarian () Paolo Mantegazza Jean-Paul Marat José Marchena Ruiz de Cueto Giovanni Marchesini ( but :it:Giovanni Marchesini is a different professor at the University of Padua!) Pierre Sylvain Maréchal Robert Ranulph Marett Victor Margueritte François Auguste Ferdinand Mariette Léon Marillier ( see :fr:Léon Marillier) Alberto Mario ( see :it:Alberto Mario) Jessie White Mario Edward Laurens Mark () Erich Marcks ( Murray Marks ( Christopher Marlowe Jean-François Marmontel Thomas Marryat Henry Rutgers Marshall Philip Bourke Marston François-Marie de Marsy ( :fr:François-Marie de Marsy) Henry Marten (regicide) Alfred Wilhelm Martin Bon Louis Henri Martin Emma Martin (socialist) Harriet Martineau Charles Frédéric Martins see :fr:Charles Frédéric Martins) Francis Sidney Marvin Karl Marx Tomáš Garrigue Masaryk Pietro Antonio Stefano Mascagni Filippo Masci ( see :it:Filippo Masci) Josiah Mason Jules Émile Frédéric Massenet Gerald Massey Marie-Alexandre Massol ( see s:fr:La Sculpture dans les cimetières de Paris/Père-Lachaise/75) Jean-Henri Maubert de Gouvest