Eponyms: K – L
~~~~~ K ~~~~~
| Kafkaesque | Franz Kafka (1883-1924), Austro-Hungarian, then Czech writer |
| kayser | Heinrich Gustav Johannes Kayser (1853-1940), German physicist |
| kelvin | William Thomson Kelvin, 1st Baron Kelvin (1824-1907), Scottish physicist |
| Klein bottle | Felix Klein (1849-1925), German mathematician |
| klieg light | John H. (1869-1959) and Anton T. Kleigl (1872-1927), American lighting experts |
| knickerbockers | Dietrich Knickerbocker, pseudonym of Washington Irving (1783-1859), American author |
| Köchel number | Ludwig von Köchel (1800-77), Austrian botanist and cataloger |
~~~~~ L ~~~~~
| Lamaze Method | Fernand Lamaze (1890-1957), French obstetrician |
| lambert | Johann Heinrich Lambert (1728-77), German scientist |
| langley | Samuel Pierpont Langley (1834-1906), American astronomer |
| lawrencium | Ernest Orlando Lawrence (1901-58), American physicist |
| Leninism; Leningrad | Vladimir Ilyich Lenin (1870-1924), Russian statesman |
| leotard | Jules Léotard (1842-70), French acrobat |
| lesbian | Sappho of Lesbos (c. 600 BC), Greek poetess |
| Levis | Levi Strauss (1830-1902), Bavarian immigrant to the USA and clothing merchant |
| lewisite | Winford Lee Lewis (1878-1943), American chemist |
| Linnaean | Carolus Linnaeus (1707-78; original name Carl von Linné), Swedish botanist |
| lobelia | Matthias de Lobel (1538-1616), Flemish botanist and physician |
| Lobster Newburg | Ben Wenberg, West Indies ship captain |
| loganberry | James Harvey Logan (1841-1928), American judge |
| Lonsdale belt | Hugh Cecil Lowther, 5th Earl of Lonsdale (1857-1944), English sportsman |
| Lucullan | Lucius Licinus Lucullus (c.110-57BC), Roman general |
| Luddite | Ned Ludd, 18th century English labourer |
| lynch | William Lynch (1742-1820), American plantation owner and vigilante |