William Kelly Biography

John G. Kemeny Biography

Charles Kettering Biography

Jack St. Clair Kilby Biography

Margaret E. Knight Biography

Willem Johan Kolff Biography

Sergei Korolev Biography

Samuel L. Kountz Biography

Stephanie Louise Kwolek Biography

Friedricher König Biography

Hedy Lamarr Biography

Edwin Herbert Land Biography

Paul Langevin Biography

Samuel Langley Biography

Irving Langmuir Biography

Lewis Howard Latimer Biography

Carl Gustaf de Laval Biography

Ernest Orlando Lawrence Biography

Henry Louis Le Châtelier Biography

Nicolas Leblanc Biography

Philippe Lebon Biography

Robert S. Ledley Biography

Jerome Lemelson Biography

Jean-Joseph-Étienne Lenoir Biography

Leonardo da Vinci Biography

Justus von Liebig Biography

Otto Lilienthal Biography

Abraham Lincoln Biography

Karl von Linde Biography

Gabriel Jonas Lippmann Biography

Oliver Joseph Lodge Biography

Ada Augusta, Countess of Lovelace Biography

Karl Friedrich Wilhelm Ludwig Biography

Charles Macintosh Biography

Theodore Harold Maiman Biography

Vance H. Marchbanks Biography

Guglielmo Marconi Biography

Etienne-Jules Marey Biography

Pierre-Emile Martin Biography

Sibilla Masters Biography

Jan Ernst Matzeliger Biography

John Mauchly Biography

Henry Maudslay Biography

Hiram Stevens Maxim Biography

Wilhelm Maybach Biography

Edward Maynard Biography

John Loudon McAdam Biography

Cyrus H. McCormick Biography

Elijah McCoy Biography

Edwin Mattison McMillan Biography