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Danh sách theo bảng chữ cái > L

Dmitry Lachinov (1842–1902), Russia – mercury pump, economizer for electricity consumption, electrical insulation tester, optical dynamometer, photometer, electrolyser
René Laennec (1781–1826), France – stethoscope
Georges Lakhovsky (1869–1942), Russia/USA – Multiple Wave Oscillator
Hedy Lamarr (1914–2000), Austria and USA – Spread spectrum radio
Edwin H. Land (1909–1991), USA – Polaroid polarizing filters and the Land Camera
Samuel P. Langley (1834–1906), USA – bolometer
Alexander Nikolayevich Lodygin (1847-1923), Russia - incandescent lamp
Irving Langmuir (1851–1957), USA – gas filled incandescent light bulb, hydrogen welding
Norm Larsen (1923–1970), USA – a.o. WD-40
Lewis Latimer (1848–1928), USA – Invented the modern day light bulb
Gustav de Laval (1845–1913), Sweden – invented the milk separator and the milking machine
Semyon Lavochkin (1900–1960), Russia – La-series aircraft, first operational surface-to-air missile S-25 Berkut
John Bennet Lawes (1814–1900), UK – superphosphate or chemical fertilizer
Ernest Orlando Lawrence (1901–1958), USA – Cyclotron
Nikolai Lebedenko, Russia – Tsar Tank, the largest armored vehicle in history
Sergei Lebedev (1874–1934), Russia – commercially viable synthetic rubber
William Lee (1563–1614), UK – Stocking frame knitting machine
Antoni van Leeuwenhoek (1632–1723), The Netherlands – development of the microscope
Jerome H. Lemelson (1923–1997), USA – Inventions in the fields in which he patented make possible, wholly or in part, innovations like automated warehouses, industrial robots, cordless telephones, fax machines, videocassette recorders, camcorders, and the magnetic tape drive used in Sony's Walkman tape players.
Jean-Joseph Etienne Lenoir (1822–1900), Belgium – internal combustion engine, motorboat
Giacomo da Lentini (13th Century), Italy – Sonnet
R. G. LeTourneau (1888–1969), USA – electric wheel, motor scraper, mobile oil drilling platform, bulldozer, cable control unit for scrapers
Rasmus Lerdorf (born 1968), Greenland/Canada – PHP (programming language)
Willard Frank Libby (1908–1980), USA – radiocarbon dating
Justus von Liebig (1803–1873), Germany – nitrogen-based fertilizer
Hon Lik (born 1951), Chinese. electronic cigarette
Otto Lilienthal (1848–1896), Germany – hang glider
Lin Yutang (1895–1976), China/USA – Chinese language typewriter
Charles Lindbergh (1902–1974), USA – organ perfusion pump
Frans Wilhelm Lindqvist (1862–1931), Sweden – Kerosene stove operated by compressed air
Carl Linnaeus (1707–1778), Sweden – formal Binomial nomenclature for living organisms, Horologium Florae
Hans Lippershey (1570–1619), The Netherlands – telescope
Jonas Ferdinand Gabriel Lippmann (1845–1921), France – Lippmann plate, Integral imaging, Lippmann electrometer
Lisitsyn brothers, Ivan Fyodorovich và Nazar Fyodorovich, Russia – samovar (the first documented makers)
William Howard Livens (1889–1964), UK – chemical warfare – Livens Projector
Eduard Locher (1840–1910), Switzerland – Locher rack railway system
Alexander Lodygin (1847–1923), Russia – electrical filament, incandescent light bulb with tungsten filament
Mikhail Lomonosov (1711–1765), Russia – night vision telescope, off-axis reflecting telescope, coaxial rotor, re-invented smalt
Yury Lomonosov (1876–1952), Russia/United Kingdom – first successful mainline diesel locomotive
Aleksandr Loran (1849 – after 1911), Russia – fire fighting foam, foam extinguisher
Oleg Losev (1903–1942), Russia – light-emitting diode, crystadine
Antoine Louis (1723–1792), France – Guillotine
Archibald Low (1882–1956), Britain – Pioneer of radio guidance systems
Ed Lowe (1920–1995), USA – Cat litter
Gleb Lozino-Lozinskiy (1909–2001), Russia – Buran (spacecraft), Spiral project
Ignacy Łukasiewicz (1822–1882), Poland – modern kerosene lamp
Auguste and Louis Lumière (1862–1954 and 1864–1948, resp.), France – Cinématographe
Cai Lun, 蔡倫 (50–121 AD), China – paper
Giovanni Luppis or Ivan Vukić (1813–1875), Austrian Empire (ethnical Croatian, from Rijeka) – self-propelled torpedo
Richard F. Lyon (born 1952), USA – Optical mouse
Arkhip Lyulka (1908–1984), Russia – first double jet turbofan engine, other Soviet aircraft engines